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Explore the hottest developer projects on Show HN for 2025-01-20. Dive into innovative tech, AI applications, and exciting new inventions!
Summary of Today's Content
Today's Product Highlights
- Product Name: Personalized Duolingo for Vocabulary Building
- Highlight: An innovative language learning tool that creates personalized Duolingo-like experiences from user-curated word lists, allowing contextual vocabulary practice from any source material.
Quick Summary
- Most Hot Category: AI/ML Tools & Applications
- Top Keywords: AI, Language Learning, Open Source, Developer Tools
- Most Popular Product: Personalized Duolingo (121 points)
Technology Trends
- AI Integration
- Language Learning Technology
- Open Source Development
- Cloud-native Applications
- Developer Productivity Tools
- Web3/DeFi Solutions
Project Distribution
- AI/ML Tools: 35%
- Developer Tools: 25%
- Educational Tech: 15%
- Web Applications: 15%
- Productivity Tools: 10%
Trend Insights
- Strong focus on AI-powered solutions across various domains
- Growing emphasis on personalized learning experiences
- Increased interest in open-source alternatives to popular services
- Rise in developer productivity and automation tools
- Emergence of decentralized finance solutions
- Trend toward privacy-focused and self-hosted applications
- Integration of AI in traditional development workflows
- Focus on improving user experience through automation
The data shows a clear trend toward AI-powered solutions while maintaining user privacy and control. Educational technology and developer tools continue to be major areas of innovation.
Today's Top 10 Trending Products
Top 1. Revolutionize your vocabulary learning with a personalized Duolingo-like experience tailored just for you! This innovative tool adapts to your unique language journey, making vocabulary building engaging and effective. (Likes: 121, Comments: 30)
Top 2. Discover the ultimate guide to mastering SaaS technical sales calls with this insightful book that provides proven strategies and tips for success. Enhance your skills and boost your sales performance today! (Likes: 25, Comments: 2)
Top 3. Introducing SupGen: a groundbreaking model-free program synthesizer that leverages examples and dependent types to streamline code generation and enhance productivity for developers. (Likes: 19, Comments: 8)
Top 4. Revolutionize your race experience with our cutting-edge timing system featuring integrated replay functionality, allowing participants and viewers to relive every moment of the action. (Likes: 23, Comments: 2)
Top 5. Introducing i18n-ai-translate: A powerful AI-driven translation tool designed to break language barriers effortlessly. With its cutting-edge technology, it ensures accurate and context-aware translations, making global communication seamless for individuals and businesses alike. Boost your productivity and enhance collaboration across languages with i18n-ai-translate today! (Likes: 13, Comments: 0)
Top 6. Open-source conversational AI agents designed to enhance internal tools for seamless communication and efficiency. (Likes: 9, Comments: 4)
Top 7. Introducing Humbug: an innovative open-source AI development environment predominantly powered by artificial intelligence. Embrace cutting-edge technology to streamline your AI projects and enhance your coding experience. (Likes: 13, Comments: 0)
Top 8. Explore the creative world of turtle graphics with CFRS Community Demos, showcasing engaging patterns generated using just six simple commands. Perfect for beginners and enthusiasts alike, this interactive platform invites users to experiment and learn through visual programming. Join the community and unleash your creativity! (Likes: 9, Comments: 1)
Top 9. A specialized management tool designed exclusively for digital agencies, streamlining workflows and enhancing collaboration. (Likes: 8, Comments: 1)
Top 10. Introducing an ad-free solution for downloading Facebook videos and reels effortlessly. Enjoy seamless access to your favorite content without interruptions, while preserving high-quality video files for offline viewing. Perfect for users looking to enhance their social media experience without ads! (Likes: 4, Comments: 4)
1. Show HN: Personalized Duolingo (kind of) for vocabulary building
URL: https://github.com/baturyilmaz/wordpecker-app
Author: arbayi
Description: Hi! Wanted to share the project I really wanted to have. TLDR; this app lets you create your own list of words and you get a Duolingo-like experience (kind of, still needs a lot of features) practicing those words in their context.
My English is not the best but not the worst either. But I realized I can't boost it up after a certain level! In my belief, in order to truly learn a language, you need to be exposed to that language often. Vocabulary is the key factor here if you really want to improve in any language.
My experience is that when I read a book to improve my English vocabulary, I encounter words that I don't know so often and my reading gets disturbed. I go look for the meaning, come back, put it in context, re-read it, etc. It didn't work for me. So I tried listening to audiobooks - I listen to the book and read along, and whenever I encounter a word, I write it down. I get these 50 words in 2-3 pages and I ask ChatGPT to give me their meanings. I read them, take the book, and now read it myself. That helps for sure, but still after a while I lose those words because I never encounter them again. Well then, in order to not forget those words, I need some kind of exercise, right? A flashcard app maybe? Well, I still need to go out there, ask ChatGPT to create questions, put them in a flashcard app, etc. It's still time-consuming and this is supposed to be fun!
I need to be exposed to English in my daily life. I just need to save the words somewhere and whenever I want, I need to be able to practice them in a fun way, in Duolingo style maybe? So then I realized would it be better to store words in their own context? I mean, say I read Harry Potter and have a list of words I encountered in it, say I watch Breaking Bad and have a list of words I encountered watching it. I believe seeing those words together and practicing together makes it easier to remember them.
But I shouldn't be the one adding the meaning of the word and the one to generate exercises, right? It all should be automated. The exercise part will be handled by LLM for sure, but for the meaning of the word, I can fetch from a dictionary? But I really don't like the dictionary definitions and one word can have multiple meanings in their own context. So then I need to use LLM for this task too and have the word's meaning in its own context.
You create a list for your context, you add words, meanings get added automatically, and I see the word added in a different color (coloring is also a method used to remember words). It all takes seconds. And whenever I want to practice these lists, I can use learn mode to learn and test my knowledge in quiz mode. So I basically built this app ((thanks to Claude 3.5 Sonnet)). I want it to be like Duolingo, but of course I still have a way ahead to go, but wanted to share it in hopes of getting contributors.
You can read more in the repository. I would love to get your thoughts on this.
Popularity: 121 points | 30 comments
2. Show HN: I wrote a book about running great SaaS technical sales calls
URL: #
Author: wjgilmore
Description: Hello HN,
I spent my career writing software until about 7 years ago in which practically by accident I wound up in a technical sales role. Through determination and a lot of practice (2,000+ technical sales calls and counting) I managed to get pretty good at it, and along the way played a critical role in closing deals with Fortune 10 companies, Ivy league universities, non-profits, Federal government agencies, and many other organizations.
At some point along the way I started compiling various notes and observations regarding what it takes to create a truly great technical sales presentation. There is so much more to this process than "showing a demo"; you need to be able to deeply understand the potential customer's perspective and concerns, present yourself and your organization in a professional and reassuring manner, and yes create, rehearse, and deliver a relevant and practical demo. You also need to "do what you say" and consistently deliver everything you promise, no matter how small.
A few months ago I started turning these notes into a book titled "SaaS Demos That Sell":
The target audience is first-time technical founders, as well as anybody who is considering or has recently accepted a role on a software company's sales team.
It's available for just $15 on Amazon (Kindle format), Gumroad (PDF and epub), and Leanpub. If you're unable to afford the book please DM me on X/Twitter @wjgilmore and I'll send it to you for free.
Jason
Popularity: 25 points | 2 comments
3. Show HN: SupGen, an model-free program synthesizer by examples / dependent types
URL: https://www.youtube.com/watch?v=bEP88ucXga
Author: LightMachine
Description:
Popularity: 19 points | 8 comments
4. Show HN: Race Timing with Integrated Replay
URL: https://storytiming.racing
Author: ephaeton
Description: Instead of playing video and trying to display timing information next to it, how about we build a simulation based on timing data and become able to determine the state of the race at any given point in time based on the few 'radar blips' of sector loop passes we have?
This is that. It takes the video and timing material of a 24h race (The IMSA Weathertech Sportscar Championship ROLEX24 at Daytona 2024) - 4 videos hosted on YouTube and a big CSV of laptimes and reimagines how a race replay might look like.
It comes with a few non-standard visualizations, and a lot of possibilities for navigation, including navigation based on race events such as flag states, overtakes, pit stops etc.
It's a zig program based on raylib running in the browser thanks to emscripten, with a bit of js glue code to control the YouTube player. Ultimately, controlling replays is just one of the goal features of the tech stack. Live-Timing, Live-broadcast, and broadcast of sim-racing are other application areas where I see this being beneficial.
Race fans, Enjoy, I know I certainly do!
Popularity: 23 points | 2 comments
5. Show HN: i18n-ai-translate
URL: https://github.com/taahamahdi/i18n-ai-translate
Author: tmahdi
Description:
Popularity: 13 points | 0 comments
6. Show HN: Open-source conversational AI agents for internal tools
URL: https://github.com/inferablehq/inferable
Author: lunarcave
Description: Hey HN,
We're John and Nadeesha. We created Inferable. [1]
After years of working in operationally-intensive startups, we got tired of watching our internal tools gather dust and break. We've all been there - you build a tool, it works great for a while, then the API changes and suddenly you're back to square one. Sure, Retool and similar tools help, but someone still has to maintain them, and the backlog of "quick fixes" and the mountain of glue code keeps keeps growing.
We started Inferable to see whether LLMs can help here.
Inferable helps developers create conversational AI agents that act as the orchestration layer between existing internal APIs and human intent. Instead of building custom scripts or internal tools, developers can quickly set up these agents as conversational experiences [2].
We natively integrate with Slack and email (more coming), while also supporting Zapier and HTTP APIs for more advanced workflows.
Our SDKs can wrap existing functions, or existing APIs (REST, GraphQL). We use long polling for message delivery, which means these instances don’t have to open ports / configure network ingress.
A Re-Act agent dynamically searches through these tools based on user context, schedules jobs as tool calls, and iterates based on the result.
We prioritize using existing codebases as deterministic guardrails. For additional verifications, we provide primitives to easily implement human-in-the-loop processes, custom authn, and authz, all backed with your existing codebases.
Our customers use Inferable to:
- Interact conversationally with internal APIs and databases (with restricted connections)
- Programmatically process Datadog alerts - automatically tagging them and routing them with enriched context
- Programatically or conversationally enrich Zendesk support tickets by automatically adding context from multiple internal systems
To achieve this functionality, we've developed:
- A built-in Re-Act (reasoning + action) agent
- A distributed job queue for managing long-running tasks
- End to end chat state, and message serialisation for tool calls
- Service discovery and function registry for tools
- Context-aware dynamic tool search
- Native SDKs for Node.js, Golang, C#, and other languages
We’re open-source (MIT) and fully self-hostable within existing infrastructure. Happy to receive any feedback or answer questions.
---
[1] https://github.com/inferablehq/inferable
[2] Acknowledging that calling an LLM every time is costlier than using a script, we’re solving the problem of repeating these flows without LLM intervention in our next iteration.
Popularity: 9 points | 4 comments
7. Show HN: Humbug – an open source AI dev environment mostly built by AI
URL: https://github.com/m6r-ai/humbug
Author: tritondev
Description:
Popularity: 13 points | 0 comments
8. Show HN: CFRS[] Community Demos: Patterns with turtle graphics using 6 commands
URL: #
Author: susam
Description: Hello HN!
Back in 2023, I introduced CFRS[], a minimalist drawing language with turtle graphics, featuring just six simple commands, through a "Show HN" post (https://news.ycombinator.com/item?id=37956065).
Since then, I've received a number of creative patterns and animations created using this tiny, esoteric language by the small and friendly community that has since formed around it. In this post, I intend to share some of these interesting creations with everyone to highlight the ingenuity of their creators. If you create an interesting demo using this language, please share it in the comments--I'd love to see it!
Demos contributed by various HNers: https://susam.github.io/cfrs/demo.html
Try CFRS[] here: https://susam.net/cfrs.html
Popularity: 9 points | 1 comments
9. Show HN: Management tool but only for digital agencies
URL: https://www.agencyhandy.com/
Author: abrarsami
Description: I built a tool to help you manage clients, projects, tasks, invoices, payments, and communication -all in one place instead of going from tool to tool
Popularity: 8 points | 1 comments
10. Show HN: Ad Free Facebook Video/Reel Downloader
URL: https://fsaver.cc
Author: tookietherookie
Description:
Popularity: 4 points | 4 comments
11. Show HN: I built an AI video filter to watch R-rated shows with my family
Author: justbobbydylan
Description: I wanted to watch Peep Show (really funny British comedy series ever, free to watch on youtube, season 1 here: https://www.youtube.com/watch?v=wXX4XJzsqQ8&list=PLAbD_h_-yg...) with my family, and lots of other shows/movies that are just too explicit for their taste, both in terms of language as well as visual elements (violence, sex, etc). Couldn’t find a clean version or any good software that could clean up the content for me, so I built it for personal use, and now have thrown it up on ClipFilter.com in case anyone else would find it useful.
How it works: Two options
- Target rating: choose the rating level you want: G, PG, PG-13, R — each one has different presets for what kind of language and visual elements to filter out
- Custom: design your settings from scratch for each of these elements: violence,
Right now only one option to remove visually inappropriate elements:
- Skip
But realized some scenes that are critical for plot were rendered incomprehensible with all the skipping, so also working on adding:
- Blur
Underlying technology, simply put
- for language, speech is converted to text; when a word in the blocklist is found it identifies the timestamps at beginning and end of word and mutes audio during
- for visual elements, really poor experience with a content moderation apis, especially OpenAI's free endpoint.Instead, frames are fed to vision LLM along with requirements for what is inappropriate and what is not based on user input; frames that are found noncompliant are flagged and either skipped.
Because I am using OpenAI APIs I can’t make it totally free but all signups get 5 free minutes of content filtering on signup, and there's no verification on signup yet so if you're enjoying and run out of credits feel free to make a new signup.
Always looking for feedback on both the functionality/output quality as well as pricing.
Don’t expect there to be a ton of demand for this use case anyway but was a fun project and might be some similar use cases out there so eager to hear any and all thoughts!
Popularity: 3 points | 3 comments
12. Show HN: I made tracking competitors social media a breeze with GPT-4o
Author: malhalwachi2000
Description: Hi HN,
I’m excited to share something I’ve been working on: ScoutlyAI—a tool that simplifies tracking competitors’ social media and online activity.
The idea came from my own frustration with how scattered and time-consuming it is to keep an eye on competitors. I wanted something that could monitor multiple sources (like websites, Instagram, and X), summarize the important updates, and present actionable insights—all in one place.
ScoutlyAI does just that: • You create “scouts” for competitors by selecting sources you want to track. • It uses AI to distill changes (like posts, updates, or website edits) into summaries called “Insights.” • Everything is displayed in a clean dashboard, and you get periodic email updates to stay in the loop.
Building this has been a challenging but rewarding journey. From tackling the complexities of AI summarization to creating a user-friendly interface, it’s been a huge learning experience. I’m constantly improving the platform and adding new features to make it even more useful.
I’d love for you to check it out at https://scoutlyai.com and share your thoughts. There’s a free trial (credit card required), and your feedback would mean a lot to me as I continue refining the tool.
Thanks for taking a look, and I hope ScoutlyAI helps make tracking competitors a breeze for you too!
Popularity: 5 points | 1 comments
13. Show HN: Makex: A Modern Build/Automation Tool
URL: http://documents.meta.company/makex/latest/index.html
Author: nateskulic
Description: Hi Everyone!
I want to show Makex, a modern build/automation tool.
It has been under development for approximately 1 year, receiving many improvements over this time.
Makex was designed to replace the original Make, and to supplant Bazel and other related build systems.
It's built for handling large monorepos, while keeping it open for a hybrid/mono/multi-repo future. It's also designed for safety, reproducibility, clarity, speed, incrementality, simplicity and more — the things you'd expect out of a modern build system.
We've written many Makex files internally, and it's replaced dozens of existing Makefiles among other build/automation scripts. It does everything it says it does. It is fairly mature at this point (but there is more work ahead).
There's a lot more in the feature pipeline. For example, we're adding task resource thresholding (or constraints) in the next release. As far as I know, no other build tool has an effective way to keep large highly parallel builds from overloading machine resources (aside from the typical -j flag for controlling parallelism). Also, under proposal and queued are a query language, improvements to creating multi-platform builds, and IDE plugins.
It works on Linux, and should work in any POSIX/Unix-compatible environment.
You'll have to use pip (or pipx/uv/etc) to install it. We're aiming to produce and distribute high quality self contained executables this year (there is a task defined in Makex's Makexfile to produce such executables for yourself).
Take a look, test, and let me know what you think.
Thanks!
Popularity: 4 points | 2 comments
14. Show HN: StyleKit – Instant Website Design Analyzer Chrome Extension
URL: https://chromewebstore.google.com/detail/stylekitio/cnffgleahhecdnhighbkoeeeegficaok
Author: mcyger
Description: Hi HN,
StyleKit is a Chrome extension I developed to help teams quickly capture and document website design systems. It's free to download and use.
As someone who works on both design and development, I frequently study and record how websites look for different projects, or document the design of other sites for an aspect I really liked.
This takes a lot of my time: opening web developer, finding style classes, viewing the computed style to see what was actually happening, and then storing information I wanted to save. Sometimes I couldn't find an element either way.
I created StyleKit to streamline this process.
It instantly generates a comprehensive design system document (a "StyleKit") for any website, capturing colors, typography, logos, and design patterns. The extension works entirely in the browser, requiring no external processing.
Key features include:
- Instant StyleKit generation with color palette, typography system, and design pattern identification
- Export options including one-click element copying, PDF documentation, and portable HTML file
- Real-time design analysis with interactive element highlighting and usage statistics
I'd love to hear your thoughts and feedback on StyleKit.
Popularity: 6 points | 0 comments
15. Show HN: Custom Website in 2 Mins, Free Hosting, You Own the Code
URL: https://www.gitpage.site/
Author: ambitiouz
Description: Got feed up building websites on platforms that lock you in to paying ongoing fees. When you stop paying you loose your site and all your work.
Build gitpage to build custom website, no subscription, free hosting, free url, you own the code, add custom domain FREE, no branding.
You might need a litte html knowledge but with free copilot this is also easy.
Popularity: 4 points | 2 comments
16. Show HN: Using AI to Maximise Holidays
Author: senti_sentient
Description: Enter your country, state, and year to discover the most efficient annual leave strategy
Popularity: 3 points | 2 comments
17. Show HN: Starskey – Fast Persistent Key-Value Store (Inspired by LevelDB)
URL: https://github.com/starskey-io/starskey
Author: alexpadula
Description: Hey everyone! I hope you’re all doing well. I thought I'd share a new open source Go project I started. It’s called Starskey!
I’ve been diligently studying database internals, data structures, and more for almost two years now, writing many different things. This open-source key-value store is built on top of a log-structured merge tree, inspired by WiscKey and LevelDB. It's fairly fast, durable and rather efficient. It's meant to provide you a persistent embedded storage option for binary key value pairs.
Github
https://github.com/starskey-io/starskey
Web
I hope you check out Starskey, do let me know your thoughts and or questions.
Thank you!
Popularity: 5 points | 0 comments
18. Show HN: SQLTutor – Interactive, AI-assisted, in-browser SQL tutor
URL: https://sql.programmable.net/
Author: shabda
Description:
Popularity: 5 points | 0 comments
19. Show HN: Pentasnake
URL: https://pentasnake.franzai.com/
Author: franze
Description:
Popularity: 2 points | 3 comments
20. Show HN: TikTok-like web front end for Bluesky
URL: https://github.com/Krisseck/Bluesky-Videos
Author: Risse
Description:
Popularity: 3 points | 2 comments
21. Show HN: Searchlight – Open-source Postgres client for macOS
URL: https://github.com/ravelantunes/Searchlight
Author: ravelantunes
Description: Hi HN,
Over the past year, I’ve been building a native MacOS Postgres client for my personal use. While there are plenty of existing clients, I built this because:
- No open-source Postgres client matched the smooth UX of tools like Sequel Pro/SequelAce (for MySQL).
- I missed the satisfaction of long-term product ownership and iteration—recent work has me jumping between projects.
- I’ve been using Postgres more lately and wanted to get hands-on to deepen my knowledge.
I also wanted a playground to experiment with client features that would help me on day-to-day. Some I have implemented already:
- Hover over a foreign key column to see the linked record in a popover.
- Autocomplete lookup for foreign key records when inserting/editing rows.
- High-level stats pop-up when hovering over a column.
- Contextual “sugar” features (e.g., UUID fields include a button to generate a UUID while editing).
- On update/insert failures, it tries to highlight the issue on the problematic column, vs some generic error alert.
It’s still very bare-bones and I still use it alongside other tools for features I haven’t implemented (management features for tables/schemas/user), but I’m already using as my main client for 90% of what I work on.
I’m sharing here to get early feedback. Mostly trying to determine if more people find value in this project if I keep developing it.
ps.: I’m using my personal Apple developer account so I can’t notarize the app with Apple. If you try to install from the GitHub releases page MacOS will warn that it can’t verify the developer identity, so you will need to approve the install on Settings > Privacy, or build from source.
Popularity: 5 points | 0 comments
22. Show HN: Ergonomically call LLM in bulk from CLI
URL: https://github.com/JoeCooper/chorus
Author: thatjoeoverthr
Description: Hi!
I've found myself repeatedly writing little scripts to do bulk calls to LLMs for various tasks. For example, run some analysis on a large list of records.
There are a few "gotchas" to doing this. For example, some service providers have rate limits, and some models will not reliably return JSON (if you're asking for it).
So, I've written a command for this.
What I've tried to do here is let the user break up prompts and configuration as they see fit.
For example, you can have a prompt file which includes the API key, rate limit, settings, etc. all together, or break these up into multiple files, or keep some parts local, or override parameters.
This solves the problem of sharing settings between activities, and keeping prompts in simple, committable files of narrow scope.
I hope this can be of use to someone. Thanks for reading.
Popularity: 5 points | 0 comments
23. Show HN: phm.ai – MLK Day Hackathon - AI global health system
Author: arionhardison
Description: MLK day got Trumped today so I spent the day hacking on a side project. The goal is to have agents simulate global health system activity and use patient (digital) twins to model care plans for people "like us" all over the world.
Creating Program: https://www.youtube.com/watch?v=eIaJZ13A0UQ
I am working on each location right now trying to setup some RAG based on each region and/or public health system.
The "Hack" for the day was just to see if I could get agents speaking in FHIR to work w/ i18n translations.
German: https://gkv.dev - publishes programs to de.phm.ai
Canadian: https://ca.medicare.dev - publishes to ca.phm.ai
Australian: https://au.medicare.dev - publishes to au.phm.ai
USA: https://us.medicare.dev - publishes to us.phm.ai
Swiss: https://foph.dev - publishes to ch.phm.ai
UK: https://uk.nhs.dev - publishes to uk.phm.ai
Click the flag to make a program specific to that region.
Didn't make as much progress as I would like to have but learned a lot more about RAG and started learning about MCP so good day overall.
- Thx for your time. - ACH
Popularity: 5 points | 0 comments
24. Show HN: Typing Granny Footsteps
URL: https://typinggrannyfootsteps.com/
Author: boros2me
Description: My first JavaScript game that I put together with Cursor with only updating a few lines of code manually. Funny how AI brings out product thinking and I can confirm the dopamine dose comes from making and shipping, not from writing code.
Popularity: 2 points | 2 comments
25. Show HN: Namefinder.app – find ready to purchase domain names for your new idea
Author: ellg
Description: Wanted to play around with cloudflare's AI gateway offerings and came up with a fun little app that I've already found to be pretty useful (used it to come up with the domain for itself)
This will generate a list of domains that are currently not registered and give you a lil blurb on how you could utilize them
Seemed like something others might find useful / fun as well.
Responses might take a few seconds to pop up, may work on the ux a bit to make this less apparent later.
Popularity: 2 points | 2 comments
26. Show HN: Ad Free TikTok Video Downloader
Author: tookietherookie
Description:
Popularity: 4 points | 0 comments
27. Show HN: I wrote a TUI instead of a resume
URL: https://freemasen.com/blog/resume-tui/
Author: freemasen
Description:
Popularity: 3 points | 1 comments
28. Show HN: I made infinite craft open source
URL: https://github.com/SpyC0der77/infinite-craft
Author: SpyCoder77
Description: I saw a video by bufferhead on youtube where he made infinite craft open source. I wasn't really pleased with his remake, so I decided to remake it myself.
Any feedback is appreciated.
Popularity: 1 points | 3 comments
29. Show HN: Mercantive – The all-in-one platform for digital creators
URL: https://mercantive.com/en
Author: vergasta
Description: Hi HN,
I’d like to share what we’ve been building!
We created Mercantive to address a problem we’ve seen too often: selling digital products globally is unnecessarily complicated. From payment processing and tax compliance to secure delivery and analytics, creators often spend more time on operations than on creating.
Mercantive is an all-in-one platform for digital creators, designed to handle the complexities of selling and delivering digital products so you can focus on your craft. Whether you’re a course creator, indie product maker, or content creator, we want to make selling online easier.
Here’s what’s included:
- Hosting and Streaming for Videos
- Global Payments and Tax Handling
- Analytics and Marketing Tools
- Subscriptions and Licenses Management
We’ve just launched and would love to get feedback from the HN community. Are there features you think are missing? Any ideas on how we could improve?
You can check out Mercantive at https://mercantive.com . I’m here to answer questions or hear your thoughts. Thanks in advance for your feedback—it means a lot to us!
Popularity: 1 points | 2 comments
30. Show HN: DeltaScript – scripting language skeleton to be extended into DSLs
URL: https://github.com/jbunke/deltascript
Author: flinkerflitzer
Description: DeltaScript is a lightweight scripting language skeleton that is designed to be easily extended for the specification and implementation of domain-specific languages with a shared syntax.
v0.1.0: https://github.com/jbunke/deltascript/releases/tag/v0.1.0
Includes the language specification and the official language implementation (an interpreter targeting Java)
Popularity: 3 points | 0 comments
31. Show HN: CodeRaga – Flow State for Developers Through Indian Classical Music
Author: dprophecyguy
Description: Curated ragas that supposedly do wonders for your focus—each raga’s got its own mathematical note patterns that tap into different brainwave states.
- Time-based selection (morning/afternoon/evening) so you’re in sync with your circadian groove.
- Pomodoro timer with 30/60/120-min options, because you know a little structure can go a long way.
- No vocals—just soothing instruments like sitar, santoor, and flute, so your brain isn’t fighting any lyrical distractions.
Popularity: 2 points | 1 comments
32. Show HN: Laundryroom.social – meetups without hostage holding
URL: https://www.laundryroom.social/en
Author: Jean-Philipe
Description: Hi HN,
I’m happy to share LaundryRoom.social, a free platform I built for hosting meetups. It was born out of frustration with Meetup.com's steep price hikes and their practice of holding your meetups, images, and messages hostage - deleting them if you don’t pay within a month.
The name “Laundry Room” comes from my early days in Berlin, living in a student hostel. The laundry room became a serendipitous space where I’d meet new people - random connections that often turned into lasting ones. I wanted to bring that same spirit to this project.
I wrote this as a stay-at-home-dad with a baby, so the project is still a bit rough around the edges.
For the future, I was thinking to release a "pod" kind of open source stand-alone version of it where you could host your meetup on your own hardware, but make it discoverable via laundryroom.social - I need to do more research on what standards this could be built on.
Monetization is another thing I need to consider. Hosting isn't expensive and I feel like I'm 50% there in terms of feature-completeness. So I wouldn't need a lot of income to make this work.
I’d love your thoughts, feedback, and ideas. What features would you like to see in a community-building platform?
Popularity: 3 points | 0 comments
33. Show HN: Pramaana, a simple command-line reference and full text manager
URL: https://github.com/abhimanyupallavisudhir/pramaana
Author: abhimanyupasu
Description: Zotero is one of the "big four" apps of my life (alongside VSCode, Obsidian and a web browser) -- I use it as a reference manager (via BetterBibTeX) plus a library (via Zotmoov).
One thing I really disliked is all the point-and-click one has to do in Zotero, because all the category structure is stored within the app itself (i.e. in a database, rather than in the trivial way on the filesystem).
pramaana is to Zotero what pass is to Bitwarden.
A simple CLI tool for managing references and full texts in a folder on your filesystem.
Popularity: 3 points | 0 comments
34. Show HN: Beyond Time – A Minimal Framework for Rethinking How We Use Time
Author: asvinil
Description: Hey I’m Asvini. I’ve been meaning to ask you a question: how do we break free from rigid scheduling and task overload to live and create more intentionally? That puzzle led me to build Beyond Time, a AI life coach app designed to help us track work and personal projects in a more fluid, less clock-bound way.
Core Idea: Instead of traditional calendars or to-do lists, Beyond Time focuses on your true progress markers—like moments of insight, fresh creative output, or deep work sessions—without the guilt of ticking off too many tasks. Implementation: It’s powered by a Node.js backend, with a React front end that tracks user-defined milestones. Instead of daily deadlines, the system encourages you to move at your own pace and observe qualitative, not just quantitative, improvements. Why HN Might Care: I’m looking for thoughts on whether flexible, trust-based systems can actually help us accomplish more in the long run. How do we balance the need for accountability with the desire for flow and creativity? Experiments & Challenges: In building this, I noticed friction: many of us still crave the external push of hard deadlines. I’d love feedback on how you’d bridge that gap without losing the Beyond Time philosophy. If you’re curious, check it out at [https://beyondtime.ai]. I’d be grateful for constructive feedback.
Popularity: 2 points | 0 comments
35. Show HN: DeFi Yield Optimizer
URL: https://github.com/Dyslex7c/DefiYieldOptimizer
Author: furfural
Description: Managing decentralized finance (DeFi) investments is becoming increasingly complex as the ecosystem grows. With an ever-expanding array of protocols offering varying yields, users face significant challenges in optimizing returns while minimizing risks. The need for constant monitoring and manual reallocation of funds can be both time-consuming and daunting, particularly for newcomers and even seasoned investors.
Our DeFi Yield Optimizer addresses these challenges by automating the process of yield optimization across multiple protocols. This innovative solution simplifies the investment journey, making DeFi more accessible and efficient for all users, from beginners to experts.
Popularity: 2 points | 0 comments
36. Show HN: Discover facts about anything, powered by Qwen2-VL
URL: https://patakaro.vercel.app/
Author: tested1
Description: Hi HN,
I built a quick app using Lovable AI and Nebius—took me about 10-15 minutes. I was just messing around with AI tools to see how well they can handle coding and honestly, I’m impressed.
Lovable is surprisingly good at handling basic CRUD operations. I didn’t have to write a single line of code for this app.
The idea behind it was to create something like Google Lens, but powered by AI—a way for users to instantly learn interesting facts about anything, anywhere. Kind of like a basic version of Duolingo for real-world learning.
Right now, it’s super simple—no auth or anything, just to keep it lightweight. But it could easily be upgraded with features like learning streaks and user profiles to make it more interactive.
Would love to hear your thoughts or ideas for improvements!
Popularity: 2 points | 0 comments
37. Show HN: A tool that scans websites using Firestore for publicly accessible data
URL: https://github.com/realchandan/securebase
Author: chandan155
Description: I’m launching a tool I developed back in March 2024. It lets you analyze websites or apps using Firestore for publicly accessible data.
You just need to enter a website URL or select an APK that uses Firestore, and it will analyze it and generate a report with its findings. It may not be fully accurate all the time, but it usually is. The tool was made with benevolence in mind and should not be used for malicious purposes. I'm releasing it under the MIT license.
I’m releasing it now because it's something cool, and it was just sitting in cold storage without any use.
Popularity: 2 points | 0 comments
38. Show HN: Google Messages for Web" Alternative
Author: chandan155
Description: I made an open-source alternative to "Google Messages for web" that utilizes WebRTC data channels to show your phone's text messages in browser.
It's an Android app you can install on your phone, with a server that uses Socket.io for signaling and coturn for the TURN server. You can also self-host it if you prefer. All source code is in the repository.
Product: https://textondesk.lol/
Repository: https://github.com/realchandan/textondesk/
Demo: https://youtu.be/-O3HVSjb_lo
Popularity: 2 points | 0 comments
39. Show HN: Play a Video (With Audio) in XTerm on *Nix
URL: https://www.youtube.com/watch?v=_b7EZf8JAFQ
Author: OhMeadhbh
Description:
Popularity: 1 points | 1 comments
40. Show HN: Get structured website data with just a prompt
URL: #
Author: ericciarla
Description: Hey everyone! Eric, Caleb, and Nick here from Firecrawl (YC S22).
We’re excited to announce the release of /extract - an endpoint that turns entire websites into structured data with just a prompt. With /extract, you can retrieve any information from anywhere on a website without being limited by crawling/scraping roadblocks or the typical context constraints of LLMs.
Here’s how our new /extract endpoint works: Users provide a prompt or desired output schema along with URLs. We leverage our existing index, /map, and /crawl endpoints to gather relevant context. For pre-indexed sites, we use a mixture of vector search, keyword search and a custom classifier to identify the most relevant pages. Some thoughtful prompting and re-ranking algorithms analyze user intent and score pages accordingly. Once identified, relevant pages are batch scraped to retrieve fresh data.
For complex tasks, an AI agent determines the type of extraction needed and routes it to the appropriate pipeline. For example, extracting thousands of products dynamically creates a custom multi-entity schema, breaking the user’s schema into smaller parts that can be processed independently. This avoids relying on an LLMs small context window and enables efficient parallelization and merging of each independent extraction at the end.
We integrate structured outputs from OpenAI, small LLMs, and task-specific models for classification and prompting. The entire process is parallelized using BullMQ and Kubernetes on GCP GKE, ensuring scalability, speed and leverages our existing Firecrawl scraping infrastructure. The result is a structured, intent-aligned response tailored to the user’s needs.
Since starting Firecrawl, we knew it wouldn't just change web scraping. We realized that AI tools could process vastly more data than humans and traditional web search methods weren't designed for this ability to consume data at scale. This opened up a new paradigm for information retrieval - one that required quickly querying structured and unstructured datasets from across the web. We set out to make building web datasets at scale easy and /extract is a major step towards this future.
If you want to try out:
- Visit our landing page here: https://www.firecrawl.dev/extract
- See Extract documentation: https://docs.firecrawl.dev/features/extract
- Also, most of our work including /extract is open-source. Check it out here at https://github.com/mendableai/firecrawl
That's all for now! Let us know any feedback on /extract.
Popularity: 2 points | 0 comments
41. Show HN: Morse Man – Learn Morse Code While Playing Hangman
URL: https://morseman.vercel.app
Author: abishekvenkat
Description: I built a Hangman variant that teaches you Morse code while you play. Instead of typing letters directly, you enter them using dots and dashes. Features include:
- Interactive Morse code input with visual feedback
- Built-in cheatsheet (costs an attempt)
- 100+ word dictionary
- Animated hangman visualization
Play it here: https://morseman.vercel.app
Perfect for anyone interested in learning Morse code through gameplay. Would love feedback from the HN community!
Popularity: 2 points | 0 comments
42. Show HN: Logverz 1.0: 10x Faster Insights, 90% Cheaper, Securely in AWS
URL: https://github.com/logleads/LogverzReleases
Author: LogLeads
Description: Say hello to Logverz 1.0, where turning mountains of logs into actionable insights is no longer a painful (and expensive) chore.
What’s the Problem?
Modern organizations swim in data—server logs, API calls, IoT metrics, and more. But:
It’s costly: High fees for tools and hidden costs.
It’s slow: Delays in turning raw data into insights.
It’s risky: Security concerns with third-party tools.
What’s the Solution?
Logverz is the all-in-one, cost-effective, and secure way to collect, process, and analyze your data directly in AWS.
Here’s why you’ll love it:
Slash Costs: Up to 90% cheaper than traditional tools.
Act Faster: Insights 10x faster for real-time decisions.
Total Control: Keep your data private and secure in AWS—no external transfers.
Seamless Integration: Works with Power BI, Tableau, Excel, and more.
What’s New in Logverz 1.0?
Built for scale with a sleek Vue 3-powered interface.
New distributed data engine leveraging AWS Lambda + SQLite for ultimate performance.
Production-ready in 15 minutes—start free with no extra licensing fees (you only pay AWS costs).
See It in Action: Watch the demo to explore how Logverz simplifies workflows and empowers your team.
Why It Matters:
Whether you're in IT, DevOps, FinOps, or Security, Logverz reduces manual data handling and boosts team productivity. Add it to your existing stack or start fresh—it’s your call.
Try Logverz Today!
Logverz.io
GitHub - logleads/LogverzReleases: LOGVERZ APPLICATION BUNDLE
If this resonates, give us a star on GitHub and share with your network. Let’s make data work smarter, not harder.
Popularity: 2 points | 0 comments
43. Show HN: Switch Default Browser
URL: https://sindresorhus.com/default-browser
Author: mofle
Description:
Popularity: 1 points | 0 comments
44. Show HN: AED Map – mobile app to browse defibrillators
URL: https://github.com/matisiekpl/aed_map
Author: matisiekpl
Description: I've created Flutter-based mobile app that allows user to browse nearest Automated External Defibrillators (AEDs). It uses OpenStreetMap database.
Popularity: 1 points | 0 comments
45. Show HN: Sudoku Web Game
URL: https://github.com/parkscomputing/sudoku
Author: paulmooreparks
Description: This is a Sudoku game that I wrote in JavaScript, since I didn't really like most of the web-based Sudoku games I found. It can generate boards of varying difficulty, or you may input a board of your own. You may play the actual game on my site at https://parkscomputing.com/page/sudoku
Popularity: 1 points | 0 comments
46. Show HN: LLM Writing Feedback Tool
URL: https://github.com/edverma/llm-writing-feedback
Author: edverma2
Description: I wrote this simple rust program to watch a file and give me feedback as I work on it. It’s been really nice and helpful for me so far, so hopefully others can get value from it also.
I also posted a brief writeup about it here: https://evanverma.com/writing-with-claude-watching-my-every-...
Popularity: 1 points | 0 comments
47. Show HN: Operation Voidstar, AI-Generated Conspiracy Comedy
URL: https://open.spotify.com/show/5T6VfCMkkntOE7R7L15Wk4
Author: wooby
Description: This is an AI side project I've been having a lot of fun with. I start with an absurd premise, then generate "source documents" with ChatGPT. Then I feed those into NotebookLM and generate a podcast. The theme is from Suno. I use ffmpeg and sox to composite and edit audio. I'm actively looking for alternatives to NotebookLM for the audio synthesis, if anyone knows any.
Popularity: 1 points | 0 comments
48. Show HN: DeriVault: a deterministic, plausible deniability password manager
URL: https://github.com/khromov/derivault
Author: khromov
Description:
Popularity: 1 points | 0 comments
49. Show HN: Spark Stack
Author: sshh12
Description: Hi all, the other day I decided to build my own open-source subscriptionless AI to site/game builder.
Thought it came out pretty well and nearly half of it is written by AI (Cursor).
More details: https://blog.sshh.io/p/building-v0-in-a-weekend
Popularity: 1 points | 0 comments
50. Show HN: StayWithMe – Digital Legacy
Author: loboda_ro
Description: Hi HN,
Roman and Oleg here, and we want to share the StayWithMe project with you all! Our software allows people to pass their life experiences, lessons and stories through generations by answering questions by categories, after which it creates a digital memory of the person, which their grand kids or other family members can interact with to learn about their ancestry.
Demo:
Join the waitlist at kai-tech.com
- we will reach out to you so you can try
Tech Stack: Voice - ElevenLabs.io Facts Extraction - Kor python library LLM - GPT 4o Transcription - Deepgram
What We’d Love Feedback On
We’d love to hear your thoughts, feedback, or any questions you have! We’ll be around to respond to comments and discuss further.
Thank you for taking the time to check it out, and we are looking forward to your insights!
Popularity: 1 points | 0 comments
51. Show HN: Context Carbon Copy – Copy file contents for context in ChatGPT o1
URL: https://github.com/beklein/ccc
Author: beklein
Description: Hello everyone,
I released a simple but effective command line tool, that I use for quickly copying content from my source code files to ChatGPT's o1 and other web tools.
1. Create a .ccc file and define files/directories that will be parsed and used as context.
2. Run ccc.
3. Paste the contents in your browser.
Different people have done similar things and probably there is a bash one-liner that will do this, but I like my workflow and wanted to share it with you.
Let me know what you think, I'm open for feedback, thanks!
Popularity: 1 points | 0 comments
52. Show HN: Android App to receive text messages to a US number – Free with no ads
URL: https://play.google.com/store/apps/details?id=com.httpsms.sandbox.twa&hl=en_US
Author: bepolite
Description:
Popularity: 1 points | 0 comments
53. Show HN: Ad free tool to download Instagram Reels and Posts
URL: https://insaver.cc
Author: tookietherookie
Description:
Popularity: 1 points | 0 comments
54. Show HN: Automate Multi-Event Calendar Creation from Plain Text
URL: https://www.text-2-ics.com/
Author: Rurouni-dev-11
Description: Originally built this to scratch my own itch, I was frustrated at having to manually create events in my calendar for basic things so I built text-2-ics. After a while, some users mentioned that they'd had problems with the tool and I discovered that they'd been attempting to create multiple events at once (for things like gym routines or their weekly timetable) which never originally occurred to me so I've now widened the scope of my original project.
Popularity: 1 points | 0 comments
55. Show HN: Claude Debugs for You (VSCode Extension)
URL: https://marketplace.visualstudio.com/items?itemName=JasonMcGhee.claude-debugs-for-you
Author: jasonjmcghee
Description: I built a VS Code extension that uses Model Context Protocol to give Claude Desktop (or any other MCP Client) the ability to directly debug code.
It's language agnostic, as long as you can provide the appropriate launch.json for debugging.
If nothing else, I wanted to share as a reference to an integration between VS Code and Claude Desktop or other MCP Clients as a jumping off point, as I couldn't find one.
One of the useful patterns used is the MCP Server just asks VSCode what it's allowed to do, which means tool configuration / changes only need to happen on the VS Code side.
Popularity: 1 points | 0 comments
56. Show HN: Visualize Algorithms Step-by-Step
URL: https://standoutdev.com/visualize/algorithms
Author: arthurtakeda
Description: Hi HN!
I've been studying the most common algorithms for a couple of weeks now then I decided to instead of just learning by myself, to share with others in a more engaging format - at least for me - while also learning more about animation on the web.
It's completely free, without any need for signups.
Hopefully you'll find it useful!
Feel free to share any feedback, thanks!
Popularity: 1 points | 0 comments
57. Show HN: Abstractionary
URL: https://abstract1.narfnilk.com/
Author: franklin_p_dyer
Description: This is a taboo-like game where you have to make other players guess a target word or phrase. When you use words that aren't among the most common English words, they are "censored" and replaced with nonsense.
Find a friend and try it out! :-)
Popularity: 1 points | 0 comments
58. Show HN: Facegif – Free AI GIF Face Swap Online
URL: https://facegif.com
Author: cyberplaid
Description: Free AI GIF & Meme Face Swap Online Effortlessly swap your face in GIFs and Memes with AI for fun and creativity!
Popularity: 1 points | 0 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