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Explore the hottest developer projects on Show HN for 2024-11-27. Dive into innovative tech, AI applications, and exciting new inventions!
Summary of Today's Content
Today, several innovative projects were shared, including tools for AI, e-commerce, and app development. Key highlights include Voice-Pro, an AI voice cloning tool, and LiftTrack, an app for Garmin strength training. Additionally, platforms like Weave offer anonymous conversations, while TeaTime provides a distributed book library using SQLite and IPFS. There are also various tech tools like TechDebt-Tracker for maintaining codebases and AutoPiP, a Safari extension for automatic picture-in-picture mode. Meanwhile, apps like ColoringsAI allow custom coloring pages, and Ziplink offers a URL shortening service with tracking features.
1. Show HN: Un éditeur de texte extensible
URL: https://lambdaway.fr/workshop/?view=function
Author: martyalain
Description:
Popularity: 3 points | 1 comments
2. Show HN
URL: https://artipixx.com
Author: zoombie
Description: hi there I'm a non coder but about 2-3 months ago i began building a full stack website using ai. it's a video sharing site for ai videos. the entire site is/was coded with various ai agents. heres what i used initial layout and components: v0.dev IDE: Cursor with claude Complex features and bugs check: o1 preview and gemini 1.5 pro
what i've learned: v0 is very good at designing the initial app components. if you tell it what you want, it will create a long list of components that you need v0 code aren't great lots of bugs but you can use claude to clean it up inside cursor. for complex components, o1 is the best. it can writes 300-400 lines components fairly bug free. you need to give it the correct context by providing codes to other components that it needs. it's not entirely bug free, it often makes little mistakes like type error or null error. claude once again is good at cleaning it up.
Popularity: 1 points | 1 comments
3. Show HN: Some Love for Garmin Strength Training
URL: https://lifttrackapp.com/
Author: enoble89
Description: I just launched LiftTrack, an app to make creating Garmin Strength workouts simple and intuitive:
As a Garmin user, I’ve always felt like strength training apps are designed with Apple Watch users in mind, leaving us Garmin fans with clunky tools like Garmin Connect. I wanted to change that. Inspired by the smooth and user-friendly experience of popular lifting apps like Hevy and Strong, I created Lift Track to give Garmin users the same level of love and functionality.
Right now, the app lets you quickly create, edit, and sync strength workouts to your Garmin watch for tracking. In the future, I’d love to add features like automatically updating weights and reps based on what you log during workouts, scheduling recurring workouts (e.g., full-body routines every Monday and Wednesday), and providing a library of pre-built weightlifting programs ready to sync to your watch.
I’d love your feedback. Let me know what you think!
Popularity: 4 points | 4 comments
4. Show HN: Voice-Pro – AI Voice Cloning Magic: Transform Any Voice in 15 Seconds
URL: https://github.com/abus-aikorea/voice-pro
Author: abuskorea
Description: Imagine creating a podcast where Mark Zuckerberg interviews Elon Musk – using their actual voices?
What sounds like science fiction is now reality.
Voice-Pro is an open-source Gradio WebUI that breaks the boundaries of audio manipulation.
Powered by cutting-edge Whisper engines, this tool turns voice replication into child's play.
Key Features:
- Zero-shot Voice Cloning
- Voice Changer with 50+ Celebrity Voices
- YouTube Audio Downloading
- Vocal Isolation
- Multi-Language Text-to-Speech (Edge-TTS, F5-TTS)
- Multi-Language Translation
- Powered by Whisper Engines (Whisper, Faster-Whisper, Whisper-Timestamped)
Video Demos:
1. Voice-Pro Usage Tutorial: https://youtu.be/z8g8LMhoh_o
2. Voice Cloning Celebrity Podcast Demo: https://youtu.be/Wfo7vQCD4no
3. Full Demo Playlist: https://www.youtube.com/playlist?list=PLwx5dnMDVC9Y7dAjm9r26...
Whether you're a content creator, developer, or audio experiment enthusiast,
Voice-Pro provides a user-friendly interface to push the boundaries of audio manipulation.
GitHub: https://github.com/abus-aikorea/voice-pro
Popularity: 125 points | 83 comments
5. Show HN: AI Hackathon_ Prize 20K USD '1-Min Creative Innovation with AI'
URL: https://huggingface.co/spaces/VIDraft/Mouse-Hackathon
Author: ctulu82
Description: VIDraft's Mouse Hackathon is an innovative event focused on creating and deploying AI-powered web services. Participants can use the Mouse-I tool to automatically generate and deploy functional web services within 60 seconds by simply inputting prompts. This tool combines AI automation with enterprise-grade infrastructure, showcasing new possibilities in web development. The hackathon encourages the development of web services across diverse themes, offering participants the opportunity to bring their creative ideas to life. (huggingface.co)
Popularity: 2 points | 2 comments
6. Show HN: Step Functions on Cloudflare Workers
Author: phoenixbox
Description:
Popularity: 1 points | 2 comments
7. Show HN: SF Search – iPhone app for searching SF Symbols by drawing
URL: https://apps.apple.com/us/app/sf-search/id6738096244
Author: luisfl
Description: Hello HN, first-time poster, long-time lurker. Sometimes I found it really hard to find a specific icon in Apple's SF Symbols library, so I made a pretty simple iPhone app that lets you make a drawing to search symbols similar to it. It also works on Macs with Apple Silicon. I used Create ML to train the image classifier that generates the suggestions.
The app is completely free and you can download it here: https://apple.co/3OmVB8W
I'd love any feedback that you might have. Hope that you find the app useful!
Popularity: 2 points | 0 comments
8. Show HN: Weave – Talk Anonymously with Friends
URL: https://hiweave.com/
Author: mschoeffler
Description: A few months ago, Dalton & Michael explained how we can damage ourselves using social media. https://www.youtube.com/watch?v=RMW_33zyTK4 Michael put it this way, "We're living in a world where you need to be careful with your thoughts".
Social media can be like a minefield—people hold back or get defensive, even with friends, because of fear of judgment or backlash. We wanted to create a platform where you can speak openly about important things without damaging relationships.
Weave lets you start conversations with friends under an alias. Over time, as you build mutual respect and trust, you can choose to reveal your identity. It’s about creating a safe space for honesty, whether you’re talking politics, personal challenges, or just sharing ideas.
Key features:
- Anonymity that evolves: Start conversations anonymously and reveal your identity when ready.
- Respect: Respecting comments moves you towards mutual respect and revealing identities.
- Real friendships: Encourage respect and understanding, not shouting matches or echo chambers.
- Built-in boundaries: A safe environment where your words aren’t tied to your public profile—unless you want them to be.
We’re in early stages and would love your feedback. Does this idea resonate with you? Are there risks we should address or features you’d like to see?
Thanks so much for your time and insights. We’re excited to hear your thoughts!
— Mike Schoeffler, Founder
Popularity: 3 points | 5 comments
9. Show HN: Search and Analyze SEC Filings of Publicly Traded Companies with AI
URL: https://www.publicview.ai/
Author: ashr_
Description:
Popularity: 2 points | 0 comments
10. Show HN: A free AI summarization web app
URL: https://ibrief.co/
Author: eibrahim
Description:
Popularity: 9 points | 15 comments
11. Show HN: New Spreadsheet, combine database and excel
URL: https://www.nocodetable.com/
Author: nkuznetsov
Description: I come up with idea - a tool for non-developers and small businesses to manage data easily. Current tools like Airtable or Google Spreadsheet are great but struggle with scalability and handling larger datasets. The idea: Combine the simplicity of spreadsheets with the power of modern databases, capable of managing millions of records. It’s targeted at users with limited resources who need a scalable, easy-to-use solution. Would love your feedback.
Popularity: 2 points | 0 comments
12. Show HN: AR Social Network: Lets u scan and share 3D objects in less than 5 mins
URL: https://apps.apple.com/us/app/airvis/id6737998221
Author: Arun_Kurian
Description: I’ve always wanted to be a developer and build cool things, but life’s circumstances have often stood in the way. This year, I finally quit my job and moved to the Bay Area with the little savings I had. Joined a co working space, started working on an AR app since I believe AR will be big in the future. I didn't have a lot of experience in programming, but was able to build a small Vision Pro app early this year with the help of GPT, which gave me confidence to try out building a larger project. Again with the help of GPT, bit of Claude, Apple Sample Codes and leveraging Firebase for backend. In just under 2 months, I was able to build a AR Social Networking app for iPhone,iPad and Mac. I am sure it is not perfect and will have a lot of bugs. But I really think the barrier to entry is now way down and people who are passionate can build products faster without spending months or years. Greatly appreciate if you guys can try out the app and let me know of any suggestions or improvements, or any bugs you find. Excited and happy to start this new journey.
Popularity: 1 points | 0 comments
13. Show HN: Chrome extension that alerts you to free samples of Amazon products
URL: https://chromewebstore.google.com/detail/freebie-alert/mofblmaoeamfpdmmgdahplgekeijbaih
Author: rizs12
Description:
Popularity: 2 points | 0 comments
14. Show HN: Show HN: We built the fastest Speech-to-text, even faster than Groq
Author: yoeven
Description: Hey HN! We’ve outperformed the fastest AI company, Groq, in Speech to Text while having a lower WER score and being more feature-rich. Check out the benchmarks and repo!
Popularity: 1 points | 0 comments
15. Show HN: I solo coded a crypto analytics platform and now it's getting traction
URL: #
Author: buckwhitzer
Description: Website: https://www.tradingdigits.io/
I year ago I published a post over here about how I learned to code on my own (my major is linguistics and I didn't know anything about coding before) and built a free crypto analytics platform with 17 tools, but back then it was barely getting 1000 visitors per month.
Since then I launched 15 new analytics tools, completely revamped the UI, added lots of new features, and even coded my proprietary candlestick charts with a technical indicator using HMTL5 Canvas from scratch (check Coinbase Premium tool).
This year the website started to get traction and now the platform is visited by 20,000 to 30,000 users per month. I will keep building on top of the existing features and will be releasing new free tools in the coming months.
Tech stack: Next.js, TypeScript, Tailwind CSS, HTML5 Canvas, Framer Motion, Html2Canvas, Canvg, Tippy.js, Supabase
Thanks for reading and I’d love to hear your thoughts. Feedback is always welcome as it’s what helps me keep improving.
Popularity: 1 points | 0 comments
16. Show HN: Create a Darkmode with Minimal JavaScript
URL: https://theosoti.com/blog/darkmode-css/
Author: Theoleff
Description: Hello everyone,
I’m excited to share a new project I’ve been working on:
I’m building a blog all about frontend development, with a big focus on CSS.
The goal? Write articles that are not just informative but also fun, with interactive examples to help bring concepts to life.
It could be anything from building a component to diving into more abstract topics.
Since it’s my first time writing a blog, I’d really love to hear what you think!
Feedback on the writing style, learning value, or anything else would be super helpful.
Feel free to ask questions, drop suggestions, or just share your thoughts.
Thanks a lot!
Popularity: 1 points | 0 comments
17. Show HN: Feels Like Paper
URL: https://www.lukasmoro.com/paper
Author: MoroL
Description: "Feels Like Paper!" is a series of prototypes about augmenting physical paper through AI. Various ML models, LLMs and a mixed reality headset are used to infuse physical paper and ink with properties of the digital world without compromising on their physical traits.
Popularity: 190 points | 69 comments
18. Show HN: VoiceAuth: Deep Fake Detector
URL: https://voicedetector.streamlit.app/
Author: desifubu
Description: Voice Auth: Deepfake Audio and Voice Detector
Because every voice deserves to be real.
Introducing VoiceAuth: Your Shield Against Deepfake Audio
VoiceAuth is here to redefine how we validate the authenticity of audio files. Whether you're a journalist, a business leader, or just someone who values truth, VoiceAuth equips you with cutting-edge tools to detect and fight deepfake audio effortlessly.
Who is it for?
Media Professionals: Ensure your audio content is credible and tamper-proof. Law Enforcement: Authenticate voice recordings in investigations. Businesses: Protect call centers and secure internal communications. Educators & Researchers: Dive into real-world machine learning and voice analytics. Security Experts: Enhance voice biometrics and authentication systems.
Why VoiceAuth?
Detect Deepfakes with Precision: Leverage advanced AI models, including Random Forest and Hugging Face technologies. User-Friendly: Intuitive interface tailored for both tech-savvy users and beginners. Fast & Reliable: Real-time analysis with confidence scores, metadata extraction, and visual insights. Multi-Model Capability: Use models like Random Forest, Melody, or 960h individually or combine them for superior results. Portable & Secure: Runs seamlessly on your system with no internet dependency for predictions.
Transforming Industries
Journalism: Verify audio sources before publishing. Legal: Strengthen audio evidence for court cases. Business: Detect fake voice inputs in customer interactions. Research: Analyze voice patterns and expand your knowledge of machine learning.
Ready to try VoiceAuth? Download now and take control of your audio files. With VoiceAuth, truth and authenticity are always within reach.
Support Us! Love what VoiceAuth stands for? Help us grow by donating here.
VoiceAuth – Deepfake Audio and Voice Detection Made Simple. Need assistance or want to collaborate? Reach out: sadiqkassamali@gmail.com
Github: https://github.com/sadiqkassamali/VoiceAuth URL: https://voicedetector.streamlit.app/ Windows app link: https://detectfakes.lemonsqueezy.com/buy/bcbe8cfb-3f5b-4826-...
Popularity: 2 points | 0 comments
19. Show HN: Gimli Tailwind – A Tailwind CSS DevTools Extension
URL: https://gimli.app/tailwind
Author: gimliapp
Description:
Popularity: 1 points | 0 comments
20. Show HN: ChatGPT Code Navigator – Enhance Your ChatGPT Coding Experience
URL: https://chromewebstore.google.com/detail/chatgpt-code-navigator/iljjnecfdhkpldbgjoaopmekbmkgbcjn
Author: batiista
Description: Hello HN community!
I've developed the ChatGPT Code Navigator, a Chrome extension designed to improve the way you interact with code snippets generated by ChatGPT.
Key Features:
Syntax Highlighting: Supports multiple programming languages for better readability. Section Navigation: Quickly jump between different parts of the code. One-Click Copy: Easily copy code snippets to your clipboard.
The extension is free and open-source. I'm eager to hear your feedback and suggestions!
Popularity: 1 points | 0 comments
21. Show HN: A website to practice for job interviews
Author: _zaidahmad
Description: A little backstory-
When I first arrived in Canada as an international student, I met a guy who created a product called InterviewPal. I was fascinated and eager to use it, but soon discovered it was exclusive to University of Alberta students. This made me frustrated so I decided to take on the challenge of building a better alternative- something more accessible and affordable.
After I announced Zilta’s waitlist on LinkedIn, Aryan blocked me, which bummed me out for a bit. But it only fueled my drive to create something much better than his overpriced product. My goal was to offer a solution that students and recent grads could actually afford and benefit from.
And that’s how Zilta came into existance. I also wanted to give indie hacking a shot and took this endeavor so you can say I hit two birds with one stone haha
---
Zilta was launched in June but I wasn't able to work on it extensively because of the workload from college and a part-time job I do. Now that the semester is approaching its end, I'm getting more time for it. Frankly speaking, I don't really know where to take this product to. Right now I am a little confused if I should focuss on marketing and getting more users to try it out and then add more features to it or the opposite. On the other hand, I've also listed this startup to sell for a few bucks because marketing is so hard.
What I want deep down? I want this product to grow to 1-2K MRR and then sell it.
The problem? I am not sure if I'm heading in the right direction.
I'd like you all to give it a try and roast this product. I'm open to receving constructive critism and any advice that can help me succeed in this journey.
Should I work on marketing, adding more features or selling this?
Popularity: 2 points | 0 comments
22. Show HN: This website takes you to a random SaaS
Author: josh_tech
Description:
Popularity: 2 points | 0 comments
23. Show HN: Darkspark – a gallery of interactive PyTorch models
URL: #
Author: reddlee
Description: Darkspark is a GUI for your neural network. It allows you to explore a visual, interactive version of your PyTorch code.
I tried all the other options I could find (netron, google’s model-explorer, tensorboard, torchview, torchlens, apple’s mycelium). These are all great projects (I really wanted to use one of them!) but none had all of the features I needed:
Opinionated layout. A layout-engine should automatically expose the underlying logic of the model. E.g. a U-net should look like a "U", see stable-diffusion-v1.5 here https://darkspark.dev/models/?model=stable-diffusion-v1-5
Interactive. Ops need to be collapsible and expandable. Complex models like stable-diffusion won't even load without this.
‘Just Works’ with any arbitrary code. I don’t want to export to ONNX, I don’t want to upload something, I don’t want to manually specify what is the model and what are the inputs. I just want to wrap my existing code in something simple. Microscope. Sometimes I also want to explore the activations and attention patterns. Like OpenAI’s microscope, but for your own models. E.g. this CLIP-like model is highly interpretable.
https://darkspark.dev/models/?model=vit_base_patch16_siglip_.... Hosted gallery. Most of what I want is usually a variant of an existing model. It’s often more convenient to just reference a url rather than trace your own code. All the models from timm, and many from the huggingface transformers and diffusers libraries, are available at https://darkspark.dev Hoping to get feedback on the hosted models before releasing the pip package for local use. Thank you!
Popularity: 2 points | 1 comments
24. Show HN: Building a YT Front & Back End from Scratch
URL: https://skipvids.com
Author: 01jonny01
Description: Hi all, well its been a labour of love. I have much more appreciation for the youtube devs after trying to recreate my own version. The benefits of SkipVids.com :
1) No Ads. Skips sponsorship messages too thanks to Sponserblock API 2) Free Background Playback 3) Free PiP (picture in picture) 4) Lite - it uses about 1/5 the resource of YouTube 5) Private - we store nothing 6) View Dislike count, thanks to RYD API (not 100% accurate) 7) Casting is supported when using SkipVids.com on desktop 8) and so much more
Give it a go, its not perfect but its pretty good IMHO.
Popularity: 1 points | 0 comments
25. Show HN: AirPrint Bridge: Enable AirPrint for Non-AirPrint Printers on macOS
URL: https://github.com/sapireli/AirPrint_Bridge
Author: eliransapir
Description: Lightweight, open-source, and fully automated, AirPrint Bridge uses macOS's built-in tools to bridge the gap without relying on external software. Perfect for reviving your trusty old printer!
Popularity: 28 points | 6 comments
26. Show HN: Tools for building AI React apps
URL: https://github.com/use-hydra-ai/hydra-ai
Author: michaelmilst
Description: Building tools to simplify how to build AI into React apps, called Hydra AI (short for "hydration".)
The idea is to build React components like normal, tell the AI when they should be used, and let the AI decide when to show them and what props to fill them with. The "list of things that are possible" in my app is, in a way, defined by the components that people can interact with, so why not just let AI control those on behalf of (or alongside) the user instead of trying to figure out all new AI logic?
Looking for people to try building something with Hydra!
Popularity: 1 points | 0 comments
27. Show HN: App that makes you do pushups every time you unlock your phone
URL: https://apps.apple.com/us/app/clearspace-reduce-screen-time/id1572515807
Author: roycebranning
Description:
Popularity: 2 points | 0 comments
28. Show HN: guitar + programming = Guitartonic?
URL: https://shilin.ca/guitars-programming-guitartonic/
Author: true_pk
Description:
Popularity: 1 points | 4 comments
29. Show HN: Read your WhatsApp Chat Export locally
URL: https://github.com/abishekvenkat/whatsapp-export-reader
Author: abishekvenkat
Description:
Popularity: 1 points | 0 comments
30. Show HN: Hyperaide – Personal Assistant for Getting Things Done
Author: iJohnPaul
Description:
Popularity: 4 points | 0 comments
31. Show HN: A program to learn phrases in multiple languages at once
Author: adampzakaria
Description: Hi everyone - I'm not a serious language learner but I've been enjoying learning phrases I can use when I travel, at restaurants, around people in public, etc. Let me know if you find it useful or what might make it useful for you!
Popularity: 1 points | 1 comments
32. Show HN: Django Protego - A Flexible and Dynamic Circuit Breaker
URL: #
Author: grandimam
Description: Hey HN!
I'm excited to share a project I've been working on: Django Protego, a dynamic and configurable Circuit Breaker for Django applications.
What is Django Protego?
Django Protego is a library that helps to protect your services from cascading failures by providing a Circuit Breaker mechanism. It's simple to integrate, dynamic, and works seamlessly with Django-based applications.
Key Features:
- Dynamic Configuration: Configure failure thresholds, reset timeouts, and half-open retries at runtime.
- Global Registry: The circuit breaker state is shared across views via a global registry, ensuring centralized control of your application’s fault tolerance.
- Easy to Use: Just decorate your views with @protego.protect to wrap your views in the circuit breaker logic.
- Flexible: Supports multiple circuit breakers in the same project, all configurable independently.
- In-Memory: Implements a highly efficient in-memory circuit breaker with no external dependencies.
How It Works:
- Protego Client: For each service, the circuit breaker maintains its state (open, closed, half-open) and tracks failures.
- Thresholds and Timeout: You can dynamically adjust failure thresholds, reset timeouts, and half-open retries via a central configuration in your Django app.
- Global Access: Protego ensures that circuit breakers are initialized once and are accessible globally in your project.
- Graceful Failures: When the circuit breaker is "open", instead of hitting the service, it automatically returns a failure response (e.g., 503 Service Unavailable).
Future Roadmap for Protego Circuit Breaker
To further enhance Protego and make it even more powerful and scalable, here's a roadmap that focuses on integrating it with Django, Redis, and databases for advanced fault tolerance, persistence, and distributed systems.
Link: https://github.com/grandimam/django-protego
Popularity: 1 points | 2 comments
33. Show HN: SRE/Ops Podcast Summarizer
URL: https://www.srenews.info/
Author: talonx
Description:
Popularity: 1 points | 0 comments
34. Show HN: I found a great way to turn my product photos in more professional ones
URL: https://www.promediafy.com/
Author: fccoelho7
Description:
Popularity: 1 points | 1 comments
35. Show HN: Investment monitoring tool for data nerds and privacy buffs
URL: https://www.mycapitally.com/
Author: panrafal
Description: Hey HN,
As someone who geeks out on both investment data and privacy tech, I built Capitally to scratch my own itch. It's encrypted on-device so that once I can afford to hire a second engineer, he cannot peek into my own data!
I wanted a way to monitor ALL my investments (stocks, crypto, real estate, angel investments, etc.) in one place and really dig into the data - but without compromising my privacy.
Here's how Capitally makes that possible:
On the data side:
Import data from CSVs, spreadsheets, or any other source via a flexible no-code editor Map any data format into a standardized schema Slice and dice with performance breakdowns, future income projections, and more
On the privacy side:
All data is encrypted and processed locally in your browser Your investment data never hits our servers unencrypted You retain complete control and ownership of your info
It's a huge challenge to build a powerful analysis tool that still keeps data local. And making it into a sustainable business (still much in progress).
Would love feedback, especially on the import flow, encryption and analysis features.
Popularity: 13 points | 2 comments
36. Show HN: Labfile, a declarative file format for orchestrating experiments
URL: https://github.com/FlywheelHQ/labfile
Author: rorytbyrne
Description: Hi friends.
I used to be a software architect/technical founder, but now I'm doing a PhD in neuroscience. One big culture shock was that much of computational science is still imperative, while software engineering shifted to declarative tools decades ago.
Many scientists (myself included) run Python scripts manually and track the inter-dependencies in their heads - often running scripts in the wrong order and getting silently incorrect results (leading to Nature papers).
This problem seems similar to managing infrastructure with Terraform or building an image with Dockerfile directives, so I've started sketching out a declarative file format for defining experiments, their hyperparameters, and their relationships.
https://github.com/FlywheelHQ/labfile
My hope is to change this workflow:
bash<p>$ python script1.py ...<p>$ python script3.py <--- fuck, forgot to re-run script 2 ...<p>$ python script2.py ...<p>$ python script3.py ...<p>
into this
bash<p>$ lab Labfile<p>Using cached results for Exp1.<p>Running Exp2... Done.<p>Running Exp3... Done.<p>
This library is just a parser, but I'm working on an orchestrator and will share it soon.
I would appreciate feedback on the syntax (I'm sure it sucks), and thoughts on what kinds of tooling could be built on top of a file format like this. I'd also like contributors (soon).
Side note: You might have noticed it's published under "Flywheel". This is a org I started recently with my friend, hoping to create the missing incentives for talented builders to work on tools for science - an often overlooked part of the tech ecosystem. That includes policy change (in the UK), funding, education, and some other things. I don't know what Flywheel is yet (non-profit? OSS collective? a fund of some sort?) since it's very new, but we have a website: https://flywhl.dev.
Popularity: 3 points | 0 comments
37. Show HN: I made a tool to convert YT video into blog in <1min
URL: https://www.video2blog.xyz
Author: hairunhuang
Description:
Popularity: 2 points | 0 comments
38. Show HN: Collatz^Reich – when the 3n+1 conjecture meets Clapping Music
URL: https://ziyaowei.github.io/collatz_reich/
Author: ziyao_w
Description: I was mindlessly playing Clapping Music on my Amazon package when I suddenly thought "Hey! Let's combine this with the 3n+1 conjecture!". Above is the result, enjoy :-)
Popularity: 2 points | 0 comments
39. Show HN: "Character.ai", but for B2B and prosumers to train communication skills
URL: https://personeo.ai/
Author: peterpalus
Description:
Popularity: 1 points | 1 comments
40. Show HN: I am building a 3D GitHub project explorer
URL: https://awesome.facts.dev/3d
Author: uwemaurer
Description: I wanted to explore the top GitHub projects and started by downloading GitHub Awesome Lists and the projects linked from there.
To get an overview I calculated an embeddings of each project description and reduced it to 2 dimensions with UMAP.
And then display it in 3d with Three.js.
Let me know if you have any suggestions for this project!
Popularity: 2 points | 0 comments
41. Show HN: Self-Hosting Supabase on Your Own Postgres RDS
URL: https://pigsty.io/blog/db/supabase/
Author: Vonng
Description:
Popularity: 5 points | 0 comments
42. Show HN: Permit.io's new predictable, startup-focused pricing model
URL: https://www.permit.io/blog/permit-new-pricing-model
Author: gemanor
Description: Hi HN, I’m Gabriel, VP of DevRel at [Permit.io](http://permit.io/). We just launched a major overhaul of our pricing, and, while working on this, I’ve encountered challenges I thought were unique to our SaaS.
The more effort I put into this, the more I felt like balancing operational costs and providing customers with predictable pricing is something other SaaS companies probably encounter as well.
We’ve had a lot of startups reach out to us to help them implement fine-grained authorization, and, as an authorization SaaS, this created some pricing problems for us.
It would be easiest for us to charge clients based on the number of authorization API calls we have to process, as each call directly represents a quantifiable cost in server and infrastructure resources. That’s the way most authorization providers do it.
The thing is, authorization calls add up quickly and unpredictably. Even a single API call from a user may require multiple authorization checks. This means potentially large, unexpected expenses for our clients.
That’s why we initially designed our pricing model around Monthly Active Users (MAU) to offer a predictable cost structure.
Basing pricing MAU, however, created a problem for us as a SaaS provider, as it doesn’t account for the variability in authorization usage that occurs within different applications.
Some companies may have a small number of users, but those can trigger a very high volume of authorization calls, meaning significant operational costs on our end.
To address usage unpredictability, we just introduced a quota on the number of resources and rules clients can define in our system, as well as a new startup tier.
By setting these quotas, we can now manage our operational costs more effectively, especially when it comes to caching rules and handling the volume of API calls.
This approach allows us to offer a Monthly Active User (MAU) pricing structure at a rate significantly lower than any other authorization-as-a-service provider.
I’m now sure this problem isn’t a challenge that’s unique to us. Have you encountered anything similar? I’d love to know how you solved it and what you think of this solution.
Popularity: 2 points | 0 comments
43. Show HN: Kurdle – Wordle Meets Japanese Kanji
URL: #
Author: jpcom
Description: Hello HN!
I built Kurdle (https://japanesecomplete.com/kurdle.html), a Wordle variant that teaches Japanese kanji through English word patterns. Each day features a new kanji that replaces a vowel in a 5-letter English word.
For example, the kanji 人 (meaning "person") might replace the "U" in "HUMAN", showing as "H人MAN". Players learn kanji meanings while solving familiar word puzzles.
Features:
- Daily puzzles using common kanji from the essential 777 list
- Streak tracking to encourage regular practice
- "Hacker mode" UI theme (toggle in top right)
- Progressive learning - starts with basic kanji and builds up
Built with vanilla JS/HTML/CSS. No frameworks, no dependencies (except for victory confetti!).
This is part of my larger mission to make Japanese learning more approachable through gamification. Would love your feedback on the concept and execution!
Popularity: 4 points | 0 comments
44. Show HN: Ziplink has launched and I would love your feedback
URL: https://www.ziplink.click
Author: gabor-boros
Description: Hi HN,
We just launched Ziplink, a URL shortening tool with tracking and QR code features.
Although way more features are coming, it already lets you:
- Shorten URLs (and optionally use custom domains)
- Track clicks and QR code engagement in real time
- Create branded QR codes
I’d love to get your feedback on the platform and hear your thoughts on what features would be appreciated.
You can check it out at: https://ziplink.click
If you want to check out the Product Hunt page, it is available at https://zipl.ink/ziplink-producthunt
Thanks!
Popularity: 2 points | 3 comments
45. Show HN: Commerce GPT – Chat with LLMs to find products in your store
URL: https://demo.yournextstore.com
Author: zaiste
Description: I’ve been experimenting with blending AI chat into e-commerce workflows. Commerce GPT is a proof-of-concept for a quick "quake-style" chat window that adds AI-powered search to your store.
Why? Typing (or speaking) multi-criteria queries to find products to buy can be faster and more intuitive than navigating menus, e.g. searching for “yellow bag under $100” or "extra virgin olive oil with high polyphenol count over 400 mg"
Built with Next.js + AI SDK and in the demo it integrates with OpenAI GPT-4o to process product data (thanks to AI SDK switching providers is straightforward)
It's still a work-in-progress, but I'd love your feedback! Could this be useful? What features or improvements would you like to see?
Demo: https://demo.yournextstore.com (click the top bar) Code: https://github.com/yournextstore/yournextstore
Popularity: 1 points | 0 comments
46. Show HN: Type Safe TypeScript/JS ORM for SQLite, MySQL and PostgreSQL
URL: https://litdb.dev
Author: mythz
Description:
Popularity: 2 points | 0 comments
47. Show HN: DJ Haiku – Instant poetic Spotify playlists
URL: https://dj-haiku.web.app/
Author: bennydog224
Description:
Popularity: 2 points | 0 comments
48. Show HN: Running Coach in Your Pocket
URL: https://apps.apple.com/us/app/coachdaniel/id6738032513
Author: davidmiron
Description: Get human pacing feedback in your headphone while you run. Create plans for your workouts. Automated workout generation
Popularity: 1 points | 0 comments
49. Show HN: Cloudberry Database – Greenplum Fork, Now an Apache Incubator Project
URL: https://github.com/apache/cloudberry
Author: tuhaihe
Description: Background: Greenplum Database (after the Broadcom acquisition of VMWare) has gone closed-source and completely shut down its open-source community.
Cloudberry, created by the original developers of Greenplum Database, is an open-source Massively Parallel Processing (MPP) database. It evolves from the open-source version of the Greenplum Database® but features a newer PostgreSQL kernel and more advanced enterprise capabilities. Cloudberry can serve as a data warehouse and can also be used for large-scale analytics and AI/ML workloads.
Cloudberry has just entered the Apache Incubator and rebranded to Apache Cloudberry.
We’re thrilled to share this milestone with the Hacker News community. Whether you’re a Greenplum enthusiast or passionate about open-source databases, we’d love your feedback and support!
Learn more in the official announcement[1] or explore the project on GitHub[2].
[1] https://cloudberry.apache.org/blog/cloudberry-database-enter... [2] https://github.com/apache/cloudberry
Popularity: 2 points | 1 comments
50. Show HN: Double-entry accounting based personal finance app
Author: aswinmohanme
Description: Hello HN! I am Aswin Mohan, full-stack mobile + web developer and I built PaperMoney(https://getpaper.money). PaperMoney is a double-entry accounting based personal finance app. It can help you keep track of your expenses, assets, liabilities and your net-worth. It is based on the command-line tools beancount and ledger.
I had been using beancount to track my expenses for over two years. The plain-text accounting and reporting with fava was great, but I wanted a mobile based app to keep track on the go. Looked around existing solutions but everything fell short when compared to beancount. Also the major apps were not available outside the United States and only supported the dollar. They were based on assigning categories to a list of transactions which I found lacking coming from double-entry accounting. So I created Paper Money. It's based on double-entry accounting, you can add your chart of accounts and add balanced transactions. We'll use this to calculate your net-worth and the balances in your accounts.
It's built using React Native for the frontend and Elixir and Phoenix on the backend. We have support for both Android and iOS. I have plans to add automated account syncing and automated expense tracking in future versions.
The target audience currently is someone who is familiar with double-entry accounting but looking for a hosted mobile version. The future versions will be focused on more mainstream customers of personal finance apps, which means making the app more accessible for people without prior experience with double-entry accounting.
I am available at aswin@getpaper.money if you have any questions or querires, and excited to hear your feedback!
Links: Website: https://getpaper.money IOS: https://apps.apple.com/in/app/papermoney/id6737713983 Android: https://play.google.com/store/apps/details?id=com.papermoney...
Video Demo of the App: https://www.loom.com/share/40cf50afe33f4e1cb4fa3e749c19a2e3?...
Popularity: 26 points | 0 comments
51. Show HN: TeaTime – distributed book library powered by SQLite, IPFS and GitHub
URL: https://github.com/bjesus/teatime
Author: yoavm
Description: Recently there seem to be a surge in SQLite related projects. TeaTime is riding that wave...
A couple of years ago I was intrigued by phiresky's post[0] about querying SQLite over HTTP. It made me think that if anyone can publish a database using GitHub Pages, I could probably build a frontend in which users can decide which database to query. TeaTime is like that - when you first visit it, you'll need to choose your database. Everyone can create additional databases[1]. TeaTime then queries it, and fetches files using an IPFS gateway (I'm looking into using Helia so that users are also contributing nodes in the network). Files are then rendered in the website itself. Everything is done in the browser - no users, no cookies, no tracking. LocalStorage and IndexedDB are used for saving your last readings, and your position in each file.
Since TeaTime is a static site, it's super easy (and free) to deploy. GitHub repo tags are used for maintaining a list of public instances[2].
Note that a GitHub repository isn't mandatory for storing the SQLite files or the front end - it's only for the configuration file (config.json) of each database, and for listing instances. Both the instances themselves and the database files can be hosted on Netlify, Cloudflare Pages, your Raspberry Pi, or any other server that can host static files.
I'm curious to see what other kinds of databases people can create, and what other types of files TeaTime could be used for.
[0] https://news.ycombinator.com/item?id=27016630
[1] https://github.com/bjesus/teatime-json-database/
[2] https://github.com/bjesus/teatime/wiki/Creating-a-TeaTime-in...
Popularity: 203 points | 43 comments
52. Show HN: I used AI to build holiday gift lists
URL: https://www.searchagora.com/gifts
Author: pencildiver
Description:
Popularity: 2 points | 0 comments
53. Show HN: Purrfect Advent – A Customizable Advent Calendar App
URL: https://purrfectadvent.com
Author: tomdevelopment
Description: Hi HN! I’m excited to share Purrfect Advent, a customizable advent calendar app for the holidays. It lets you create and share personalized calendars filled with GIFs, memes, heartfelt messages, or anything else festive. I made it as a fun way to spread holiday cheer with friends and family.
Features: • Create Your Own Advent Calendars: Add custom text, images, and GIFs for each day. • Easy Sharing: Share your calendars seamlessly with friends. • Cross-Platform: Available on iOS and Android.
I built this app because I love sharing little surprises with loved ones and wanted something unique to send to my girlfriend. I’d love your feedback—what works, what could be better, or any other ideas!
Links: • Website: purrfectadvent.com • iOS: App Store • Android: Google Play
Happy holidays, and let me know what you think!
Popularity: 1 points | 0 comments
54. Show HN: Multilingual Embedding Model for Images, Audio and PDFs
Author: yoeven
Description: I love building RAG applications and exploring new technologies in this space, especially for retrieval and reranking. Here’s an open source project I worked on previously that explored a RAG application on Postgres and YouTube videos: https://news.ycombinator.com/item?id=38705535
Most RAG applications consist of two pieces: the vector database and the embedding model to generate the vector. A scalable vector database seems pretty much like a solved problem with providers like Cloudflare, Supabase, Pinecone, and many many more.
Embedding models, on the other hand, seem pretty limited compared to their LLM counterparts. OpenAI has one of the best LLMs in the world right now, with multimodal support for images and documents, but their embedding models only support a handful of languages and only text input while being pretty far behind open source models based on the MTEB ranking: https://huggingface.co/spaces/mteb/leaderboard
The closest model I found that supports multi-modality was OpenAI’s clip-vit-large-patch14, which supports only text and images. It hasn't been updated for years with language limitations and has ok retrieval for small applications.
Most RAG applications I have worked on had extensive requirements for image and PDF embeddings in multiple languages.
Enterprise RAG is a common use case with millions of documents in different formats, verticals like law and medicine, languages, and more.
So, we at JigsawStack launched an embedding model that can generate vectors of 1024 for images, PDFs, audios and text in the same shared vector space with support for over 80+ languages.
- Supports 80+ languages
- Support multimodality: text, image, pdf, audio
- Average MRR 10: 70.5
- Built in chunking of large documents into multiple embeddings
Today, we launched the embedding model in a closed Alpha and did up a simple documentation for you to get started. Drop me an email at yoeven@jigsawstack.com or DM me on X with your use case and I would be happy to give you free and unlimited access in exchange for feedback!
Some limitations:
- While our model does support video, it's pretty expensive to run video embedding, even for a 10 second clip. We’re finding ways to reduce the cost before launching this, but you can embed the audio of a video.
- Text embedding is the fastest response, while other modalities might take a few seconds. Which we expected as most other modalities require preprocessing
Popularity: 1 points | 0 comments
55. Show HN: Self-Hosted Gateway for Ollama, LLM APIs, ComfyUI and FFmpeg servers
URL: https://openai.servicestack.net
Author: mythz
Description:
Popularity: 2 points | 0 comments
56. Show HN: An App Icon Generator for React Native
URL: https://launchyourapp.dev/tools/app-icon-generator
Author: ferchvs
Description: Generating icons for Expo and React Native is a pain.
So i created a free tool to solve this problem, you can create your icon, style it, see a preview in both OS and then export it.
Everything is 100% free, I intend to make some improvements, but any feedback is welcome
Popularity: 1 points | 0 comments
57. Show HN: Limmat – Local Immediate Automated Testing
URL: https://github.com/bjackman/limmat
Author: bjackman
Description: Every job I've worked in has had CI that is in some way unsatisfactory for me personally. But, I tend to work on projects with lots of configurations and tests that I want to run.
So, I made Limmat as a way to get want I want out of the CI as a developer (which is often a bit different from what is needed from the CI for project health, and always different from what the CI infrastructure is capable of delivering). It started as an exercise to get used to Rust, but it turned into a pretty valuable part of my workflow.
Basically it adds a new point on the spectrum of <things that run tests>. It's more lightweight and easier to configure than CI, but it supports a more rigrous workflow than stuff like Bacon that just optimises for fast feedback.
[1] https://github.com/Canop/bacon
Popularity: 1 points | 0 comments
58. Show HN: A comprehensive voice notes app that works well across platforms
URL: https://apps.apple.com/us/app/audionotes-ai-voice-notes/id6736822144
Author: vatsal1811
Description: We launched the first version of Audionotes (www.audionotes.app) in May 2023, riding the Whisper/AI voice notes hype wave. Built it on Bubble, jumped on the hype train, but something wasn't clicking despite all our improvements.
The hard truth? We didn't really know what problem we were solving or who we were solving it for. Most importantly - we weren't even using our own product.
A few months ago - we went through some serious soul-searching. We talked to our users (like, really talked), figured out what actually mattered, understood who needed this, and decided to build something we'd genuinely love to use ourselves.
In 4 months of building, we've rebuilt Audionotes from the ground up. It's now a voice-first but complete note-taking app that just works. Perfect for brain dumps, meeting captures, lecture notes, or daily journaling.
What we've built:
- The whole package: voice notes, file uploads, text notes, scanned images, and YouTube video notes
- Transcription, summaries, and custom outputs that actually make sense
- Smart meeting notes with speaker detection
- Chat with your notes (single or all) - like having a conversation with your brain
- WhatsApp bot for instant transcription and summaries Plays nice with others: Notion, Zapier, and webhook support
- Web, iOS, Android, and Chrome Extension
We've poured our hearts into this rebuild, and it feels different this time because we're building for ourselves as much as for our users.
Would love for you to try it out and tell us what you think!
Popularity: 4 points | 1 comments
59. Show HN: Measuring wait times at the immigration office
URL: https://nicolasbouliane.com/projects/immigration-office-wait-times
Author: nicbou
Description:
Popularity: 1 points | 0 comments
60. Show HN: TechDebt-Tracker to Help keep your codebase maintainable
URL: https://github.com/Forward-Lang/TechDebt-Tracker
Author: bruno-366
Description: Hi HN! I wanted to share this tool that I created in order to try to track technical debt, and get some sort of overview of a code-base's health, quality, and maintainability.
I know from work how difficult it can be to get maintenance, improvements, and refactoring efforts to be prioritized, especially without any concrete numbers/KPIs on how it will impact a product. So that's why I wanted to share this tool, which should aid in such situations, at least by bringing some numbers to the table.
I wanted to write the tool in rust so that it could handle large code-bases in a fast manner, since those are also the code-bases that are most likely to have a higher amount of technical debt.
In the future, I hope to extend the functionality so that the tools can analyze code-base that use a wide-range of different languages (maybe by taking advantage of existing syntax highlighting grammar files?).
Please feel free to leave any comments below, or open any issues/feature-requests in the repo. I'm very open to feedback, and look forward to hearing from y'all.
Popularity: 2 points | 0 comments
61. Show HN: Dynamiqs – high-performance quantum systems simulation with Jax
URL: https://www.dynamiqs.org/stable/index.html
Author: abocquet
Description: Hello HN,
We’re excited to present Dynamiqs, a Python library for simulating quantum systems. It is developed by PhD students in Paris working for Alice&Bob, a quantum computers start-up (https://alice-bob.com), in collaboration with academic research universities (Sherbrooke, Yale, Mines Paris and LPENS). Dynamiqs focuses on physical-level simulation (Schrödinger equation, Lindblad master equation, etc.) rather than quantum circuit simulation. You can think of it as a GPU-accelerated alternative to QuTiP (https://qutip.org).
Key Features:
- Blazing Fast Simulations: GPU acceleration makes Dynamiqs up to 60x faster than QuTiP for large quantum systems.
- Differentiability: Compute gradients through the solver for tasks like quantum optimal control, sensitivity analysis, and parameter estimation.
- Vectorization: Run multiple simulations simultaneously to explore different parameter values or initial states.
Dynamiqs is powered by JAX (https://jax.readthedocs.io/en/latest/quickstart.html) and Diffrax (https://docs.kidger.site/diffrax/), combining GPU acceleration and automatic differentiation with cutting-edge ODE solvers.
We’re eager to connect with the JAX/ML community, even if quantum physics isn’t your area of expertise. Dynamiqs’ features like differentiability and vectorization could spark ideas for collaborations and novel applications.
Check it out and share your thoughts—we’d love to hear feedback, suggestions, or just chat about the possibilities!
Popularity: 3 points | 0 comments
62. Show HN: AutoPiP – Safari extension for automatic Picture-in-Picture mode
URL: https://github.com/vordenken/AutoPiP
Author: whatsthatabout
Description: AutoPiP is a Safari extension that automatically enables Picture-in-Picture mode when switching tabs and disables it when returning to the video tab. No clicks needed - just seamless multitasking while watching videos.
Key features: • Automatic PiP activation when switching tabs • Smart detection for active videos only • Seamless disable on tab return • Zero configuration needed
GitHub: https://github.com/vordenken/AutoPiP
Popularity: 43 points | 14 comments
63. Show HN: ColoringsAI – Custom Coloring Pages from Ideas (My Daughter's Idea)
URL: https://www.coloringsai.com/en
Author: bakkerinho
Description: I created ColoringsAI for my 4-year-old daughter, who loves coloring but sometimes gets bored with the same old designs.
With this app, you can type in any idea—like “a unicorn in a magical forest” or “a rocket flying through space”—and instantly turn it into a printable coloring page. It’s been a hit in our house, and now I’m sharing it with everyone!
Check it out at ColoringsAI and let me know what you think. I’d love to hear your feedback or any fun ideas you come up with!
Popularity: 45 points | 22 comments
64. Show HN: App that asks ‘why?’ every time you unlock your phone
URL: https://play.google.com/store/apps/details?id=com.actureunlock&hl=en_US
Author: jarko27
Description:
Popularity: 709 points | 345 comments
65. Show HN: Generate type-safe code for SQL queries in any language
URL: https://github.com/fdietze/sqlc-gen-from-template
Author: manx
Description: sqlc (https://sqlc.dev/) is amazing, but I needed to use it in several unsupported languages. So instead of creating a plugin for each of those languages, I created a generic one, which is based on go templates.
Popularity: 2 points | 0 comments
66. Show HN: Tool for humans to guide AI agents in production
URL: https://github.com/phantasmlabs/phantasm
Author: qidentity
Description: Hi HN!
I am building Phantasm, an open-source tool that allows folks who build AI agents to have human approval layer on top of the agent. With tool-calling becoming more mainstream in agentic AI, I build Phantasm to be a layer of safety allowing humans to guide the AI agent workflow in real-time production.
It is still in early stage of development but I make sure to include components and features that makes it not too far from being production-ready. Phantasm comes with a custom server, dashboard and a Python SDK with multi-approver load balancing for growing teams. I'd love to hear more feedback from the community to make this tool something that brings value to the AI community.
Thank you in advance!
I wrote a guide here to get started with LangChain and Phantasm quickly:
https://dev.to/edwinkys/how-to-build-tools-for-ai-agents-wit...
Popularity: 1 points | 0 comments
67. Show HN: Square Ribbon – Create Unique, Eye-Catching Carousels for Social Media
URL: https://www.figma.com/community/plugin/1441862652881971511/square-ribbon
Author: GlebShalimov
Description: Say goodbye to dull, square photo carousels! This Figma plugin empowers you to design and manage stunning, creative carousel posts for Instagram and other social media platforms. Break free from conventional square layouts and transform your feed with dynamic, visually captivating designs.
Why use this plugin? Social media often restricts you to standard square dimensions, limiting your creativity. With this plugin, you can easily craft carousels that flow seamlessly across slides, making your posts stand out.
Make sure the photo doesn't fall into a group of squares to work correctly
Popularity: 1 points | 0 comments
68. Show HN: A program to learn phrases in multiple languages at once
Author: adampzakaria
Description: Hi everyone - I'm not a serious language learner but I've been enjoying learning phrases I can use when I travel, at restaurants, around people in public, etc. Let me know if you find it useful or what might make it useful for you!
Popularity: 2 points | 2 comments
Conclusion
Today's Show HN roundup showcases a diverse range of innovative projects. From AI-powered tools to creative coding solutions, these projects reflect the dynamic nature of our tech community. Which project caught your attention the most? Let us know in the comments!
Tags: #ShowHN #TechInnovation #DeveloperProjects #AI Applications #Open Source Software