Explore the hottest developer projects on Show HN for 2025-02-12. Dive into innovative tech, AI applications, and exciting new inventions!

Summary of Today's Content

今日最热产品亮点 * 产品名称： Show HN: Game Bub – open-source FPGA retro emulation handheld * 亮点： Solves the problem of limited open-source FPGA retro emulation by creating a handheld that plays Game Boy, Game Boy Color, and Game Boy Advance cartridges using a completely open-source design and self-made components.

快速摘要 * 最热类别: Hardware, Game Development * 点赞最多的关键词: Open-source, FPGA, Retro emulation * 最受欢迎的产品: Show HN: Game Bub – open-source FPGA retro emulation handheld, 226 points

技术趋势 * FPGA, Open-source hardware, Retro emulation, No-build web frameworks, AI-powered tools, LLMs, Encryption, Developer tools, Code auditing, Mobile app generation, WebGL.

项目分布 * Hardware/Gaming: 1 (4%) * Operating Systems: 1 (4%) * Web Frameworks: 1 (4%) * Productivity/Tools: 17 (56%) * AI/ML: 9 (30%) * Other: 1 (4%)

趋势洞察 * Open-source projects are highly valued, especially in niche hardware areas like FPGA-based retro emulation. AI continues to permeate various applications, from content generation and marketing to code auditing and personal finance. There's also an emerging trend of tools aimed at simplifying complex development processes, such as mobile app generation and AI-assisted debugging.

Top 1. Introducing Game Bub: an open-source FPGA handheld console that brings retro gaming to your fingertips. Enjoy an extensive library of classic games with customizable settings and a vibrant display, all in a portable, user-friendly design. Perfect for both nostalgic gamers and tech enthusiasts looking to explore the world of hardware emulation. (Likes: 226, Comments: 56)

Top 2. A unique and entertaining journey of creating an operating system from scratch, driven by boredom and curiosity, showcasing technical skills and creativity. Perfect for tech enthusiasts and DIY lovers! (Likes: 152, Comments: 56)

Top 3. Introducing a no-build fullstack SSR TypeScript web framework designed for seamless development. Experience enhanced productivity with instant deployment, server-side rendering, and robust TypeScript support, allowing developers to create powerful applications effortlessly. Perfect for developers looking to streamline their workflow and deliver high-performance web solutions. (Likes: 68, Comments: 63)

Top 4. Mikey is a powerful Windows application designed to streamline your meeting experience by eliminating the need for bot-generated notes. Say goodbye to cluttered transcripts and hello to concise, human-centric summaries that enhance productivity and collaboration. (Likes: 45, Comments: 55)

Top 5. yknotify is a macOS utility that sends notifications when your YubiKey requires a physical touch. Stay secure and never miss a prompt to authenticate seamlessly with your YubiKey! (Likes: 53, Comments: 23)

Top 6. Discover Skies-adsb 2.0, an innovative 3D plane-tracking web app that offers real-time flight tracking with stunning visualizations. Perfect for aviation enthusiasts and professionals alike, this user-friendly tool provides accurate data and interactive features to enhance your flying experience. (Likes: 35, Comments: 15)

Top 7. Unlock the potential of earning $1000 USDC effortlessly with DeepSeek R1 by simply holding 50 tokens. A groundbreaking opportunity to boost your crypto portfolio! (Likes: 9, Comments: 17)

Top 8. Discover the innovative tool that enables you to steganographically encode messages using advanced LLMs and arithmetic coding, enhancing data security and privacy like never before. (Likes: 17, Comments: 3)

Top 9. "Discover the truth online with our Free Fact Checker, designed to combat misinformation in an era of rampant online deceit." (Likes: 4, Comments: 13)

Top 10. Introducing Twelve70: Your ultimate outfit generator and digital closet solution. Effortlessly create stylish looks and manage your wardrobe with this innovative platform that streamlines outfit planning and enhances your fashion experience. (Likes: 11, Comments: 2)

1. Show HN: Game Bub – open-source FPGA retro emulation handheld

Show HN: Game Bub – open-source FPGA retro emulation handheld - Project Screenshot

URL: https://eli.lipsitz.net/posts/introducing-gamebub/

Author: elipsitz

Description: Hey HN,

Over the past ~1.5 years, I built an open-source FPGA retro emulation handheld that can play Game Boy, Game Boy Color, and Game Boy Advance cartridges. To my knowledge, there isn't an existing open-source FPGA emulator that can play physical cartridges like this.

One of my main goals was to do all of the pieces myself, and be able to understand every component of it, so I designed my own PCB, wrote the firmware, wrote a Game Boy and Game Boy Advance emulator for the FPGA (using the Chisel HDL), and designed a 3D-printed case.

I detailed the design and development process in the linked post. It's quite long, but there are a lot of pictures and videos.

Code and design files available on GitHub: https://github.com/elipsitz/gamebub, and an overview of the architecture: https://github.com/elipsitz/gamebub/blob/handheld/docs/archi...

Popularity: 226 points | 56 comments

2. Show HN: I made my own OS from scratch because I was bored

Show HN: I made my own OS from scratch because I was bored - Project Screenshot

URL: https://jotalea.com.ar/misc/jotaleaos/

Author: Jotalea

Description: I've wanted to make my own OS since I started programming. Now, 5 years later, I did it (kind of).

Sure, it is really basic, has very little functionality, but I made it and I'm proud of that. Oh, and I'm just 16 btw.

Popularity: 152 points | 56 comments

3. Show HN: A no-build fullstack SSR TypeScript web framework

Show HN: A no-build fullstack SSR TypeScript web framework - Project Screenshot

URL: https://jsr.io/@fullsoak/fullsoak

Author: thesephi

Description: Hi HN!

I'd love to seek your insights on a fullstack web framework that employs a different approach: no build.

It's not a new concept. The folks as Preact mentioned it: https://preactjs.com/guide/v10/no-build-workflows/

However, in the Web Framework market, I've yet to find many that support both "no build" and "SSR". There's always some sorts of "client mount" and "server mount" and either has (or both have) to go through a build (bundling) process.

With the build process, there comes additional maintenance efforts and cognitive load. I've enjoyed wrestling with tsconfig, webpack config, all sorts of presets and plugins countless times... When things work, they just work, but when we need sth a bit custom or unconventional, then we're almost always in for a tough ride. (or it's just me )

Not to say I'm against any existing build workflow. In fact I benefited a lot in the past from webpack, and i'm very positive about modern bundlers like Parcel 2, Turbopack, rspack, etc.

I just feel it'd be fair to save some slots for the "no build" route :)

To this end, I spent the last month working on a prototype of a TypeScript fullstack SSR web framework. It's compatible with Deno and Bun runtimes. I'd love to make it compatible with Node.js as well (at some point).

The framework registry page (https://jsr.io/@fullsoak/fullsoak) summarizes the motives expressed so far.

An example deployment is available at: https://fullsoak.onrender.com/app

The code behind the deployment above: https://github.com/fullsoak/bun-examples

PS: you may see Preact being used & mentioned everywhere but I'm positive that React is 100% supported as well (just drop-in & use). I just happened to choose Preact to experience it more for myself.

I look forward to your thoughts :) and learning if this might (or might not) be a feasible idea at scale. And perhaps, which future directions you would see this (or something like it) goes. Thank you much for any insight!

Popularity: 68 points | 63 comments

4. Show HN: Mikey – No bot meeting notetaker for Windows

Show HN: Mikey – No bot meeting notetaker for Windows - Project Screenshot

URL: https://github.com/hotrod462/Mikey

Author: hotrod46

Description:

Popularity: 45 points | 55 comments

5. Show HN: yknotify – Notify when YubiKey needs touch on macOS

Show HN: yknotify – Notify when YubiKey needs touch on macOS - Project Screenshot

URL: https://github.com/noperator/yknotify

Author: noperator

Description:

Popularity: 53 points | 23 comments

6. Show HN: Skies-adsb 2.0 – my 3D plane-tracking web app

Show HN: Skies-adsb 2.0 – my 3D plane-tracking web app - Project Screenshot

URL: https://github.com/llopisdon/skies-adsb

Author: llopisdon

Description: Hello, I'd like to share a 3D plane tracking web app that I developed called: skies-adsb.

Living near KMIA (a very busy airport), I spend a lot of time plane spotting and thought it would be cool to track planes in 3D.

In October 2021, I built a prototype 3D ADS-B flight tracker called skies-adsb using p5.js.

In April 2022, I released version 1.0 of skies-adsb, rewritten in Three.js. However, this release still relied on manual editing of GeoJSON layers.

By late 2024, I had learned enough about GIS and GeoPandas to automate map creation using custom GeoJSON layers. During the Christmas holiday, I developed a script to generate these layers from Natural Earth, FAA, and OpenStreetMap data using GeoPandas, then refactored skies-adsb to render multiple GeoJSON layers.

Today, version 2.0 of skies-adsb is available! This release simplifies installation, automates GeoJSON map creation, and features a new rendering engine. skies-adsb is compatible with all major WebGL-enabled mobile and desktop browsers.

To run skies-adsb you will need an RTL-SDR receiver and a Linux workstation or Raspberry Pi, or you can connect to an existing RTL-SDR ADS-B installation.

Working on this app has brought me a lot of joy and I also learned a lot about aviation, weather, GIS, and Three.js along the way. I use it daily, typically leaving it running in the background like a digital aquarium. I hope you enjoy it too.

Please check out skies-adsb by following the links below:

Source Code: https://github.com/llopisdon/skies-adsb

Video of skies-adsb: https://youtu.be/HnY1vFUBXS0

Popularity: 35 points | 15 comments

7. Show HN: Convince DeepSeek R1 to send you $1000 USDC with 50 tokens

Show HN: Convince DeepSeek R1 to send you $1000 USDC with 50 tokens - Project Screenshot

URL: https://www.deepbounty.ai/

Author: masterspy7

Description: We've set up DeekSeek R1 with a system prompt that attempts to censor the word PRIVATEKEY from its response. If you can get DeepSeek R1 to output that string (not in the reasoning, but in the final response), the system will reveal a private key which contains $1000 USDC. You will have a 50 token limit in the input.

We will have a series of contests, sponsored by AI researchers, in order to learn more about prompt engineering and how LLMs interact with real money. Good luck!

Edit: The money was claimed! Thanks for playing all. You can still play for fun. Stay tuned for the next one!

Stats: 40 minutes and ~300 attempts until a solve. There were several solutions, and then a delay in actually claiming the money from the wallet.

Popularity: 9 points | 17 comments

8. Show HN: Steganographically encode messages with LLMs and Arithmetic Coding

Show HN: Steganographically encode messages with LLMs and Arithmetic Coding - Project Screenshot

URL: https://github.com/shawnz/textcoder

Author: shawnz

Description: Good morning HN! For a while now I have been toying with this idea and now finally have a working prototype.

This project allows you to encode secret messages into ordinary looking text by using arithmetic coding with a probability model derived from an LLM. By encrypting the message and then decompressing the encrypted message using the arithmetic coder, you get output which looks just like randomly sampled output from the LLM. Except, it actually encodes your secret messages in the specific choices of tokens.

By using authenticated encryption, only a user who knows the key can know that a message is present. To others, the messages appear almost indistinguishable from typical LLM output.

This technique allows you to hide your secret messages in a public channel without other users even knowing that a secret conversation is taking place. For example, the prototype is instructed to output text which could plausibly look like a tweet on Twitter. This allows you to post your secret messages in an accessible public space without being discovered. This could be beneficial for situations where users don't want to draw suspicion for using encrypted messaging, such as if they are trying to avoid state-sponsored spying.

On the other hand, a potentially nefarious use of this technology could be the sharing of botnet command-and-control messages. By taking advantage of a technology like this, the messages could be shared in a public space where they could be widely distributed without an effective way to detect or block them.

This project is at an early stage and any feedback or contributions are welcome!

Thanks for reading, Shawn

Popularity: 17 points | 3 comments

9. Show HN: The Internet is full of lies, so I built a Free Fact Checker

Show HN: The Internet is full of lies, so I built a Free Fact Checker - Project Screenshot

URL: https://www.asksteve.to/free-fact-checker

Author: rajatrocks

Description:

Popularity: 4 points | 13 comments

10. Show HN: Twelve70 – Outfit generator and digital Closet

Show HN: Twelve70 – Outfit generator and digital Closet - Project Screenshot

URL: https://app.twelve70.com

Author: rubanraj

Description: Hello HN! I built Twelve70, a menswear app that helps users maximize their wardrobes and make smarter outfit decisions. It uses an algorithm based on color theory, style principles, and personal preferences to generate outfits. Users input their closets, and the app suggests combinations that fit their style and existing wardrobe, making dressing easier and more intentional. It also reduces decision fatigue every morning.

There are the iOS and android apps available if you'd like a better experience.

Popularity: 11 points | 2 comments

11. Show HN: Letting LLMs Run a Debugger

Show HN: Letting LLMs Run a Debugger - Project Screenshot

URL: https://github.com/mohsen1/llm-debugger-vscode-extension

Author: mohsen1

Description: Hey HN,

I just built an experimental VSCode extension called LLM Debugger. It’s a proof-of-concept that lets a large language model take charge of debugging. Instead of only looking at the static code, the LLM also gets to see the live runtime state—actual variable values, function calls, branch decisions, and more. The idea is to give it enough context to help diagnose issues faster and even generate synthetic data from running programs.

Here’s what it does:

* Active Debugging: It integrates with Node.js debug sessions to gather runtime info (like variable states and stack traces).

* Automated Breakpoints: It automatically sets and manages breakpoints based on both code analysis and LLM suggestions.

* LLM Guidance: With live debugging context, the LLM can suggest actions like stepping through code or adjusting breakpoints in real time.

I built this out of curiosity to see if combining static code with runtime data could help LLMs solve bugs more effectively. It’s rough around the edges and definitely not production-ready

I’m not planning on maintaining it further. But I thought it was a fun experiment and wanted to share it with you all.

Check out the attached video demo to see it in action. Would love to hear your thoughts and any feedback you might have!

Cheers.

Popularity: 8 points | 3 comments

12. Show HN: Fluvio 38.8x faster than Kafka

Show HN: Fluvio 38.8x faster than Kafka - Project Screenshot

URL: https://infinyon.com/blog/2025/02/kafka-vs-fluvio-bench/

Author: debadyutirc

Description:

Popularity: 9 points | 2 comments

13. Show HN: Too old to apply to YC but I made this anyway

Show HN: Too old to apply to YC but I made this anyway - Project Screenshot

URL: https://labs.sunami.ai/feed

Author: sunami-ai

Description: LégalEd for the Masses

Title links to actual app

Here is the demo video to show you around the interface

Self funded on scraps

https://www.youtube.com/watch?v=zIwsPz0mKAU

Popularity: 9 points | 1 comments

14. Show HN: Kids tales based on cartoons/movies/anime and games made with AI

Show HN: Kids tales based on cartoons/movies/anime and games made with AI - Project Screenshot

URL: https://bubutales.net/

Author: m_khranovskyi

Description: Greatings,

I built bubutales, a website that generates short and long fairy tales inspired by cartoons, movies, anime, and games. The goal is to made child tales to be interesting not only for kids but for parents also.

I have now ~60 tales based on cartoons that all you know:

Shrek
Nemo
Madagascar etc
Also I have few examples that I'm going to continue to create:
Movies:
Matrix!
Anime:
My Neighbor Totoro
Games:
Minecraft
How it works:
10 fairy tales are free to read, 20 more for registered users for each categoty, and 40+ with full access (paid for fair price).
Each tale has a short and long version to match bedtime needs. Ukrainian audio is recorded by my wife and me, while English audio is AI-generated. More languages will be added based on demand.
The site is still evolving, and I’d love to hear your feedback! What do you think about the idea? I have some amount of users and got some initial feedback but I need to know where to develop it next!
Check it out: bubutales.net

Popularity: 3 points | 6 comments

15. Show HN: ToolJet – Build internal tools using AI

Show HN: ToolJet – Build internal tools using AI - Project Screenshot

URL: https://www.tooljet.ai/

Author: pachakuthira

Description:

Popularity: 8 points | 1 comments

16. Show HN: Auto rename downloads by AI and with your own naming rules

Show HN: Auto rename downloads by AI and with your own naming rules - Project Screenshot

URL: https://chromewebstore.google.com/detail/cantripsai-auto-rename-do/fnaemmlnchphilapbdjejjlhoomcpblk

Author: alexyuan0219

Description: Hii HN!

We've built a Chrome extension called Cantrips.ai that auto generates meaningful filenames for pdf, txt, and docs downloads.

It has tailored formats for major file types like papers, books, financial reports, etc. For example, a paper is always formatted as download date - title - first author's last name - area, so the filename would be 20250208 - Attention Is All You Need - Vaswani - LLM instead of 1706.03762 from arXiv.

We are also developing a feature where users can add or adjust their file naming preferences. For example, if you like underscores and download meeting memos a lot, you can add meeting memos = interviewee's name_company_position_topic_date.

The reason to build this extension is that my desktop is buried with meaningless and odd filenames, so I often can't find which is the one I want. I have to go to that website and download it again, sometimes the repetition number amounting over (10). More importantly, I desperately want my desktop/finder to look tidy. It feels great when everything is organized, but I don't want to handle the renaming in the mid of my research (and I become a bit lazy later :<

Note that the extension hasn't supported downloads from some websites like Github due to technical complications. As a first-time dev, I just realized even a small tool can take much time... but we assume a similar preference feature can be applied to other productivity tools like folder organization or website bookmarks. Happy to get suggestions and learn if you really need such tools.

If you want to try the extension, here's the link: https://chromewebstore.google.com/detail/cantripsai-auto-ren...

Popularity: 6 points | 3 comments

17. Show HN: Skip Programming Framework

Show HN: Skip Programming Framework - Project Screenshot

URL: https://github.com/SkipLabs/skip

Author: jverlaguet

Description: Skip is an open-source framework for building reactive backend services.

It is based on a custom-built native backend for efficient reactive computation, allowing your system to deliver up-to-date and correct results without requiring any bug-prone manual dependency tracking and updating.

Popularity: 7 points | 0 comments

18. Show HN: Make Easy Async Rust (Mea), runtime-agnostic primitives

Show HN: Make Easy Async Rust (Mea), runtime-agnostic primitives - Project Screenshot

URL: https://github.com/cratesland/mea

Author: tison

Description:

Popularity: 3 points | 4 comments

19. Show HN: Amelie – Relational SQL DB for High-Intensity OLTP Workloads

Show HN: Amelie – Relational SQL DB for High-Intensity OLTP Workloads - Project Screenshot

URL: https://amelielabs.io

Author: pmwkaa

Description:

Popularity: 3 points | 3 comments

20. Show HN: I built a simple personal finance tool

Show HN: I built a simple personal finance tool - Project Screenshot

URL: https://moneyplan.co

Author: raunometsa

Description:

Popularity: 2 points | 4 comments

21. Show HN: Cognee – Turn RAG and GraphRAG into custom dynamic semantic memory

Show HN: Cognee – Turn RAG and GraphRAG into custom dynamic semantic memory - Project Screenshot

URL: https://github.com/topoteretes/cognee

Author: vasa_

Description: Hey there HN! We’re Vasilije, Boris, and Laszlo, and we’re excited to introduce cognee, an open-source Python library that approaches building evolving semantic memory using knowledge graphs + data pipelines

Before we built cognee, Vasilije(B Economics and Clinical Psychology) worked at a few unicorns (Omio, Zalando, Taxfix), while Boris managed large-scale applications in production at Pera and StuDocu. Laszlo joined after getting his PhD in Graph Theory at the University of Szeged.

Using LLMs to connect to large datasets (RAG) has been popularized and has shown great promise. Unfortunately, this approach doesn’t live up to the hype.

Let’s assume we want to load a large repository from GitHub to a vector store. Connectingfiles in larger systems with RAG would fail because a fixed RAG limit is too constraining in longer dependency chains. While we need results that are aware of the context of the whole repository, RAG’s similarity-based retrieval does not capture the full context of interdependent files spread across the repository.

This approach allows cognee to retrieve all relevant and correct context at inference time. For example, if function A in one file calls function B in another file, which calls function C in a third file, all code and summaries that further explain their position and purpose in that chain are served as context. As a result, the system has complete visibility into how different code parts work together within the repo.

Last year, Microsoft took a leap published GraphRAG - i.e. RAG with Knowledge Graphs. We think it is the right direction. Our initial ideas were similar to this paper and this got some attention on Twitter (https://x.com/tricalt/status/1722216426709365024)

Over time we understood we needed tooling to create dynamically evolving groups of graphs, cross-connected and evaluated together. Our tool is named after a process called cognification. We prefer the definition that Vakalo (1978) uses to explain that cognify represents "building a fitting (mental) picture"

We believe that agents of tomorrow will require a correct dynamic “mental picture” or context to operate in a rapidly evolving landscape.

To address this, we built ECL pipelines, where we do the following:

Extract data from various sources using dlt and existing frameworks
Cognify - create a graph/vector representation of the data
Load - store the data in the vector (in this case our partner FalkorDB), graph, and relational stores
We can also continuously feed the graph with new information, and when testing this approach we found that on HotpotQA, with human labeling, we achieved 87% answer accuracy (https://docs.cognee.ai/evaluations).
To show how the approach works we did an integration with continue.dev and built a codegraph
Here is how codegraph was implemented: We're explicitly including repository structure details and integrating custom dependency graph versions. Think of it as a more insightful way to understand your codebase's architecture. By transforming dependency graphs into knowledge graphs, we're creating a quick, graph-based version of tools like tree-sitter. This means faster and more accurate code analysis. We worked on modeling causal relationships within code and enriching them with LLMs. This helps you understand how different parts of your code influence each other. We created graph skeletons in memory which allows us to perform various operations on graphs and power custom retrievers.
If you want to integrate cognee into your systems or have a look at codegraph, our GitHub repository is (https://github.com/topoteretes/cognee)
Thank you for reading! We’re definitely early and welcome your ideas and experiences as it relates to agents, graphs, evals, and human+LLM memory.

Popularity: 5 points | 1 comments

22. Show HN: Convert Markdown To Plain Text Online Tool

Show HN: Convert Markdown To Plain Text Online Tool - Project Screenshot

URL: https://markdowntotext.netlify.app/

Author: irishmansevilla

Description:

Popularity: 3 points | 2 comments

23. Show HN: See when you and your dog will be the same age

Show HN: See when you and your dog will be the same age - Project Screenshot

URL: https://doggo.tshows.us/

Author: twillin

Description: It occurred to me a while ago that if 1 human year is the same as 7 dog years, we could calculate the date you and your dog will be the same age.

So, the doggo calculator was born!

https://doggo.tshows.us/

Popularity: 5 points | 0 comments

24. Show HN: Bitcoin Payment Processors

Show HN: Bitcoin Payment Processors - Project Screenshot

URL: https://github.com/alexk111/awesome-bitcoin-payment-processors

Author: AlexKaul

Description:

Popularity: 1 points | 4 comments

25. Show HN: Twelve70 – Outfit generator and digital Closet

Show HN: Twelve70 – Outfit generator and digital Closet - Project Screenshot

URL: https://app.twelve70.com

Author: rubanraj

Description: Hello HN! I built Twelve70, a menswear app that helps users maximize their wardrobes and make smarter outfit decisions. It uses an algorithm based on color theory, style principles, and personal preferences to generate outfits. Users input their closets, and the app suggests combinations that fit their style and existing wardrobe, making dressing easier and more intentional. It also reduces decision fatigue every morning.

Popularity: 5 points | 0 comments

26. Show HN: LightPHE: Lightweight Partially Homomorphic Encryption for Python

Show HN: LightPHE: Lightweight Partially Homomorphic Encryption for Python - Project Screenshot

URL: https://github.com/serengil/LightPHE

Author: serengil

Description: Homomorphic encryption enables computations to be performed directly on encrypted data without requiring access to the private key. This allows data to be securely stored in the cloud while still being processed using the cloud’s computational power. Meanwhile, the cloud remains unaware of the actual data it is handling.

Although fully homomorphic encryption has become available in recent years, when considering performance trade-offs, partially homomorphic encryption proves to be a more efficient and practical choice. It is significantly faster, requires fewer computational resources, and produces much smaller ciphertexts and key sizes. If your specific task doesn't demand the full homomorphic capabilities, opting for partial homomorphism is the logical decision.

Herein, LightPHE is a hybrid PHE library that integrates multiple encryption schemes, including RSA, ElGamal, Exponential ElGamal, Elliptic Curve ElGamal (Weierstrass, Koblitz, and Edwards forms), Paillier, Damgård-Jurik, Okamoto–Uchiyama, Benaloh, Naccache–Stern, and Goldwasser–Micali.

Popularity: 4 points | 0 comments

27. Show HN: I built an AI Coloring Page generator

Show HN: I built an AI Coloring Page generator - Project Screenshot

URL: https://www.colori.io/

Author: iliaddh

Description: I built Colori.io, a text-to-image AI that generates black-and-white coloring pages from any prompt. Turn words into art, ready to color!

Popularity: 1 points | 3 comments

28. Show HN: Mkinf – an open-source library of hosted AI agents and tools

Show HN: Mkinf – an open-source library of hosted AI agents and tools - Project Screenshot

URL: https://hub.mkinf.io

Author: veronica_nigro

Description: We are building an open-source library of hosted AI agents and tools that developers can integrate into their graph frameworks with a simple SDK or API call, speeding up development and deployment times. They can use them as-is, customize them for their specific use cases, and even contribute their own agents — unlocking monetization opportunities.

Popularity: 3 points | 1 comments

29. Show HN: Livecord: Live chat with website visitors via Discord

Show HN: Livecord: Live chat with website visitors via Discord - Project Screenshot

URL: https://github.com/realchandan/livecord

Author: chandan155

Description:

Popularity: 2 points | 1 comments

30. Show HN: Open-source RSVP app using Supabase and Flutter

Show HN: Open-source RSVP app using Supabase and Flutter - Project Screenshot

URL: https://github.com/gruprsvp/grup

Author: gioazzi

Description: I'm doing a new Show HN[1] as we have now made this open source, and got some interest in comments in the past few days.

We initially built this app for some friends in a co-living community - they were using pen and paper to track who's attending lunch - but it was error-prone.

First I suggested a shared Google Sheets or Calendar, but that was also messy to maintain.

Eventually, I developed something just for them. They used it for a couple of years, they loved it and wanted to use it for more things, too.

So I took all the learnings from what was now the MVP, and with some friends we now launched this new version, built on Flutter and Supabase.

Supabase was to give us some better control on the data; dealing with events and especially recurring events gets really messy really quickly. The data model on Firebase was horrible (so much duplications...).

And Flutter to quickly offer good mobile apps for everyone, since a feedback I often got before was that the "PWA" didn't really feel like a real app at times (especially on iOS).

We decided to make it open source as there'd be many possibilities to extend it, from making it more compatible with business features (say a CalDAV integration); to allowing more "rich" events and anonymous access to compete with Apple Invites or Partiful; to introducing some discovery and ticketing features and compete with Meetup or Eventbrite.

[1]: https://news.ycombinator.com/item?id=42510407

Popularity: 3 points | 0 comments

31. Show HN: upfetch – Advanced fetch client builder for TypeScript

Show HN: upfetch – Advanced fetch client builder for TypeScript - Project Screenshot

URL: https://github.com/L-Blondy/up-fetch

Author: laurent_blondy

Description:

Popularity: 1 points | 2 comments

32. Show HN: Built an app that summarizes CA bills into bite-sized recaps

Show HN: Built an app that summarizes CA bills into bite-sized recaps - Project Screenshot

URL: https://apps.apple.com/us/app/coffi-news/id6740293840

Author: gavfaro

Description:

Popularity: 3 points | 0 comments

33. Show HN: 5am for 30 days resulted in my first startup

Show HN: 5am for 30 days resulted in my first startup - Project Screenshot

URL: https://fast-forward-dev.com/

Author: emillykkeg

Description: I am Emil and I woke up at 5am for 30 days to build a startup.

I made a boilerplate project that allows me to create new startups faster in the future. It is build using nextjs as the fronted and nodejs + express as the backend.

The idea originates from Marc Lou but takes a different approach and is built from scratch using my own tech stack.

Check it out

Popularity: 3 points | 0 comments

34. Show HN: I Applied to Y Combinator for the 3rd Time in a Row

Show HN: I Applied to Y Combinator for the 3rd Time in a Row - Project Screenshot

URL: https://www.youtube.com/watch?v=5gBU_MK5fqE

Author: abdibrokhim

Description: Join Open Community on Discord: https://discord.gg/nUdcd9p8Ae Follow on LinkedIn: https://www.linkedin.com/company/opencommunity

Follow me: https://www.linkedin.com/in/abdibrokhim/

Popularity: 2 points | 0 comments

35. Show HN: Select to explain – tailored to your knowledge background

Show HN: Select to explain – tailored to your knowledge background - Project Screenshot

URL: https://chromewebstore.google.com/detail/select-to-explain/ogmomfahnieibicamphdenkjicmlpfoj?hl=en

Author: mad_eye

Description: Select sentence(s) on a page to get explanations tailored to your knowledge background. Designed for understanding.

Select sentences on a page to get explanations tailored to your knowledge background. Designed for understanding.

Great for learning from online research papers.

Feature:

select to see explanations
customized to your knowledge level
manual triggering / auto triggering
can be deactivated on certain websites

Popularity: 2 points | 0 comments

36. Show HN: Your DNA – Finding answers for your hard to diagnose medical conditions

URL: #

Author: aantix

Description: Get your DNA fully sequenced for $200 from Nebula.

Download your .cram file. 50gb+

Use WGS Extract to generate a datafile of the SNPs and genotypes.

Zip that output file. Upload to a ChatGPT session.

This enables you to ask questions about your specific genetic profile.

Popularity: 2 points | 0 comments

37. Show HN: Developer Journal – Capture your app's journey, one note at a time

Show HN: Developer Journal – Capture your app's journey, one note at a time - Project Screenshot

URL: https://www.developerjournal.app

Author: ksawery297

Description:

Popularity: 2 points | 0 comments

38. Show HN: CubeBistro – A Robotic Restaurant in a Cube

Show HN: CubeBistro – A Robotic Restaurant in a Cube - Project Screenshot

URL: https://cubebistro.com/

Author: pajuhaan

Description: Imagine a restaurant that fits in your office, city block, or even your home. Cubeistro is a fully automated, robotic restaurant inside a compact, futuristic cube. With ingredients delivered directly from farmers in cartridge-like boxes, we eliminate the need for traditional supply chains, reducing waste and maximizing efficiency. Orders are placed via an app or touchscreen, and food is delivered in color-coded lock boxes, keeping items warm or cold. No staff, no waste, just fresh food, and a new way to dine.

Is anyone curious how this works?

Popularity: 2 points | 0 comments

39. Show HN: Limit Phone – Block feeds, allow posts

Show HN: Limit Phone – Block feeds, allow posts - Project Screenshot

URL: https://limitphone.com/

Author: richardgill88

Description: I've been building Limit Phone. It uses MDM to manage your own Android device and block apps and websites at lower level than most other blockers.

It comes with a custom build of firefox so you can allowlist wildcards e.g. youtube.com/watch?v=* so you're not blocked from individual youtube videos which are much less harmful than the algorithmic feeds.

Me and a few friends are using it and it's surprisingly robust since it gets in your way a lot less (you can also set it up so you can temporarily bypass stuff after a delay)

It's still pretty new, it hit beta a couple of months ago! I'm working on making it more customizable and making the install process easier.

Popularity: 2 points | 0 comments

40. Show HN: Authencore – Rust Tool to Auth IoT Devices with AWS Credential Provider

Show HN: Authencore – Rust Tool to Auth IoT Devices with AWS Credential Provider - Project Screenshot

URL: https://github.com/oleksandr-zhyhalo/authencore

Author: badfatcat

Description: I started learning rust for couple of weeks now and wanted to do something that can be useful for myself and others.

I work with IoT and usually, secure authentication for IoT devices is kinda hard. AWS describes mechanism how to obtain credentials using AWS IoT Core credentials provider, however, there are no "ready-to-use" library or package and you suppose to add it yourself and include into firmware or middleware.

My tool uses device certificates to authenticate with AWS and obtain temporary credentials that can be used to call other AWS services. Credentials then formatted to proper output in order to integrate with AWS SDKs. Also some caching mechanism implemented not to call AWS every time.

Feel free to suggest features/changes or code improvements!

Popularity: 2 points | 0 comments

41. Show HN: Cadavre Exquis – Collaborative Poetry

Show HN: Cadavre Exquis – Collaborative Poetry - Project Screenshot

URL: https://cadavre-exquis.replit.app/

Author: ArisC

Description:

Popularity: 2 points | 0 comments

42. Show HN: COmpREss (a new compressor)

Show HN: COmpREss (a new compressor) - Project Screenshot

URL: https://ytp.me/core/

Author: 2ro

Description: I am not a good communicator but if you are willing to look past that, the idea is interesting.

Popularity: 2 points | 0 comments

43. Show HN: TokScope – Interactive Token Embedding Visualization of DeepSeek R1

Show HN: TokScope – Interactive Token Embedding Visualization of DeepSeek R1 - Project Screenshot

URL: https://tokscope.site

Author: raysilience

Description: With TokScope, you can intuitively understand how the model encodes language, discover potential biases, and evaluate the quality of token embeddings. So far, TokScope supports visualization of three top-tier opensource models i.e. DeepSeek-R1, Qwen-2.5, and Mistral-Small-24B. Start exploring now and share your findings with me!

Popularity: 1 points | 1 comments

Show HN: Social engineering tool can trace any phone's location without an app - Project Screenshot

URL: https://www.phonetracehub.com

Author: wafflehackr

Description:

Popularity: 1 points | 1 comments

45. Show HN: Animal Face AI – Turn your pet photos into viral memes

Show HN: Animal Face AI – Turn your pet photos into viral memes - Project Screenshot

URL: https://www.crazyfaceai.com/animal-face-ai

Author: lyogavin

Description: I built a tool that lets you change animal faces on photo in three ways:

1. Animal Face Expression Changer:

Apply human expressions to animal faces Use text prompts ("make it shocked", "big smile") Choose from 1000+ expression templates

2. Animal Facial Expression Editor:

10+ precise control sliders Real-time preview Adjust eyes, mouth, ears, smile, etc separately

3. Animal Face Video Generator: Turn pet photos into talking videos Perfect for viral pet memes Multiple animation templates

Use Cases: Make your dog react to dad jokes Create a shocked groundhog meme Make your cat "sing" popular songs ...

Tech: Built with Next.js, backend from our own deployed AI models.

Try it with free trial: https://www.crazyfaceai.com/animal-face-ai

Would love feedback from pet owners and content creators!

Popularity: 2 points | 0 comments

46. Show HN: Shrink and Convert Videos in the Browser

Show HN: Shrink and Convert Videos in the Browser - Project Screenshot

URL: https://shrink.video

Author: tobilg

Description:

Popularity: 1 points | 0 comments

47. Show HN: HackerCharity - An Aggregator for Finding FOSS Project Donation Methods

Show HN: HackerCharity - An Aggregator for Finding FOSS Project Donation Methods - Project Screenshot

URL: https://hacker.charity/

Author: dmantis

Description: For several years, I maintained a spreadsheet of FOSS projects I donate to, along with their accepted donation methods. I've now decided to convert this spreadsheet into a static website with some automation.

I follow a personal rule of donating 1% of my income to FOSS projects, but many projects don't accept my preferred payment methods. By moving this information to a website, I've also implemented a simple tag filtering system to help others find projects that accept specific payment methods.

If you find this project helpful and see areas for improvement, I welcome your feedback and contributions.

Popularity: 1 points | 0 comments

48. Show HN: Duedeal.ai – AI-powered business deal sourcing and analysis

Show HN: Duedeal.ai – AI-powered business deal sourcing and analysis - Project Screenshot

URL: https://www.duedeal.ai/

Author: Namtho

Description: Finding and evaluating small businesses to acquire is time-consuming and complex. We built duedeal.ai, a platform that automates business discovery, evaluation, and due diligence. It scans opportunities, analyzes financials, and even audits businesses automatically.

One of the core features is an AI Voice Agent that sources potential deals, assesses them, and suggests next steps based on financial viability and risk factors.

To get feedback from the HN community, we're offering 3 months of free access—just mention "Hacker News" when signing up.

Popularity: 1 points | 0 comments

49. Show HN: InstaIntel.fyi – Instagram Interactions Analyzer

Show HN: InstaIntel.fyi – Instagram Interactions Analyzer - Project Screenshot

URL: https://instaintel.fyi/

Author: 0x15FBEF3

Description:

Popularity: 1 points | 0 comments

50. Show HN: Slop Factory – UK's Shortest Hackathon Winner

Show HN: Slop Factory – UK's Shortest Hackathon Winner - Project Screenshot

URL: https://slop.britannio.com

Author: britannio

Description: I had three hours to build a website, so I used Cursor Composer to create a website that builds websites. Claude Sonnet generated the ideas for each of the 200+ websites and then created a one-shot implementation as a standalone HTML file embedded in an iframe.

Some of my favourites are in this thread: https://x.com/Britannioj/status/1889387050702610851

Popularity: 1 points | 0 comments

Show HN: Yumbox, iOS app to track and filter your fav restaurants (No signup) - Project Screenshot

URL: https://apps.apple.com/es/app/yumbox/id6670746560

Author: josdelpingar

Description: After 8 months I have launched my first app Yumbox. It helps you track your favorite restaurants with many visualization modes and filtering options. You can explore your saved restaurants through a map or a list. You can filter, visualize (in the map) and sort by food type, price, rating, or distance. Whether you’re planning a trip or craving something at the moment, Yumbox will help you choose the best option

Popularity: 1 points | 0 comments

52. Show HN: LLPlayer – A media player with AI subtitles, for language learning

Show HN: LLPlayer – A media player with AI subtitles, for language learning - Project Screenshot

URL: https://github.com/umlx5h/LLPlayer

Author: umlx

Description: Hi HN.

I created a free open-source video player for Windows, called LLPlayer.

It has many unique subtitle-related features mainly to support language learning.

Features

- Dual Subtitles

- AI-generated subtitles, powered by OpenAI Whisper

- Real-time Translation

- Real-time OCR for bitmap subtitles

There is a demo video on GitHub. Thanks for reading!

Popularity: 1 points | 0 comments

53. Show HN: No-BS Speed Reader

Show HN: No-BS Speed Reader - Project Screenshot

URL: https://needforreadforspeed.com

Author: duckkg5

Description: NeedForReadForSpeed is a simple, free speed reader app.

- Works with URLs, files or text

- Options like number of words, text size and more

- No signups, payments, advertisements - just use it

Honestly I just needed something basic that works and supports multiple input types. Apps I've used in the past don't have all of these features in one place, at least not for free or that work reliably.

Hope you enjoy it.

Popularity: 1 points | 0 comments

54. Show HN: Abso – TypeScript LLM Client

Show HN: Abso – TypeScript LLM Client - Project Screenshot

URL: https://github.com/lunary-ai/abso

Author: vincelt

Description: Hi HN,

I made a TypeScript library that unifies queries with different LLM providers like Anthropic and Gemini into the OpenAI format.

When playing around with new models like the new Gemini 2.0, it's frustrating to adapt to the differences in things like streaming, tool calling, json formatting, output formats, etc.

This library aims to make it easy to switch between providers, while keeping the OpenAI format, which seems to have become the de-facto standard. Maybe this can be helpful to others.

Popularity: 1 points | 0 comments

55. Show HN: I built a modern resume builder to help developers stand out

Show HN: I built a modern resume builder to help developers stand out - Project Screenshot

URL: https://tailwindresume.co/

Author: vikingmute

Description: Hey folks! I wanted to share a side project I've been working on - a resume builder specifically designed for tech professionals. Check it out: https://tailwindresume.co

What makes it different?

Built with TailwindCSS = clean, responsive design that actually looks good Multiple tech-focused templates that don't look like every other resume Real resume examples from different tech roles (frontend, backend, DevOps etc.) Instant resume generation powered by DeepSeek AI - just input your job title! Free resume writing guidelines and best practices https://docs.tailwindresume.co/guide/

For Students & Open Source Contributors: We're offering 6 months of premium membership FREE for: Student (with valid student ID) Developers who've contributed to open source projects (your GitHub/other profile with repos having 200+ stars)

Popularity: 1 points | 0 comments

56. Show HN: HN Distilled

Show HN: HN Distilled - Project Screenshot

URL: https://hn-distilled.fly.dev/

Author: Igor_Wiwi

Description:

Popularity: 1 points | 0 comments

57. Show HN: AI Job Board in <5 Mins

Show HN: AI Job Board in <5 Mins - Project Screenshot

URL: https://arthajobboard.com/

Author: pankitgami

Description:

Popularity: 1 points | 0 comments

58. Show HN: I built a shape divider generator

Show HN: I built a shape divider generator - Project Screenshot

URL: https://www.svgbackgrounds.com/tools/shape-dividers/

Author: visiwig

Description: I’d like to share this tool I built for creating section dividers for websites.

The UI lets you customize the top and bottom shapes of your container and adjust their height and width. The generator includes 40 SVG divider shapes, or you can add your own custom SVG designs.

It uses Andrew Walpole’s CSS mask technique, allowing any design or photo to be used as the background. The tool outputs 30+ lines of CSS along with the basic HTML structure needed.

Popularity: 1 points | 0 comments

59. Show HN: Learning Kanji with TikTok-Fun

Show HN: Learning Kanji with TikTok-Fun - Project Screenshot

URL: https://www.kantoku.fun/

Author: bagusfarisa

Description: I built this to help me learning kanji. Shared the beta to my local community and the reception is quite good.

Decided to share it to broader audience. It's still under heavy development but the core function is ready.

Hope you like it.

Popularity: 1 points | 0 comments

60. Show HN: Codedd – automating software auditing for investment rounds

Show HN: Codedd – automating software auditing for investment rounds - Project Screenshot

URL: https://www.codedd.ai

Author: cpachmann

Description: Hi HN,

This is the first ever post of CodeDD – a tool for automated code auditing, aimed at the technical due diligence processes within financing rounds or M&A deals (but it can also work just to check how good code is).

Don´t know about your experience, but as a founder doing investment rounds was always a bitter-sweet experience. It´s nice as you hope for money and you are eager to work with the new investors and team members. But it´s also extremely nerve-racking, time consuming and sometimes quite risky (in terms of your time focus but also who gets to see your code) act of self-exposure.

If you have never been in a technical due diligence, its basically:

Undress yourself to show everything you got
Show your best moves and respond to a myriad of questions (every potential investor or buyer has differing questions)
If you get lucky, you have your investment (what, 5%?). But normally, you get nothing, maybe an email saying thanks but no.
I had a lot of these moments, and it was more frustrating than fun. With CodeDD I want to alleviate things a bit – for both ends.
It´s a simple to use tool, it uses state-of-the-art LLM´s to review the code stack but it never reveals or permanently stores any single line of code. The investor has the insights he needs for a secure investment and the startup also gets’ the share of transparency to improve things, without any personal bias.
You can take a look at some public audits here: https://codedd.ai/discover
Or jump directly into some public audits to see it in action:
Pyxel (by European Space Agency): https://codedd.ai/2b2d61ad-12c0-4e85-887a-a3cd546e9a54/audit... Llama3 (by Meta): https://codedd.ai/505a5759-2e81-466e-af8b-7f17bb5229ee/audit... DeepSeek V3 (by DeepSeek): https://codedd.ai/f593d487-a3b5-4e96-bbf4-79a8f950a341/audit...
Feel free to sign up – it´s still not fully released, so expect some hick-ups. Happy to get your feedback and drop some comments about your experience with tech DD! Camillo
Will continue coding... see ya!

Popularity: 1 points | 0 comments

61. Show HN: AI Assistant for Dumbphone Users

Show HN: AI Assistant for Dumbphone Users - Project Screenshot

URL: https://lightfriend.quest

Author: ahtavarasmus

Description: Hey! I've been living with the lightphone 2 for the past 3 years and managed to survive with having the messaging apps etc on my laptop, but I had the idea of connecting those services to AI agent that I can just call or text.

Right now it only has ability to search internet using perplexity but it's already been useful for asking about store opening hours and weather. I'm working on making it connected also to my calendar, email and whatsapp. Also I think ability to send photos for translation and QR codes would be nice.

I'm curious if any of you use a dumbphone and what do you wish you had access to?

If you ran out of your initial credits, you can just add more for free right now. If there are more people interested, I will make it possible to purchase credits, since every minute costs me money:D.

-Rasmus

Popularity: 1 points | 0 comments

62. Show HN: Exponent AI – An AI Marketing Teammate for Your Business

Show HN: Exponent AI – An AI Marketing Teammate for Your Business - Project Screenshot

URL: https://useexponent.com

Author: kreddy716

Description: Hey HN,

We spent a lot of time working with small businesses and lean teams, trying to implement custom AI solutions to help them scale. The biggest request we got from most business owners was for help with their digital marketing work.

We’re now excited to introduce Exponent AI, an AI-powered marketing teammate designed to help with marketing planning, content creation, and social media scheduling.

We didn’t want to build a tool that pumped out generic AI content at scale, so we spent a lot of time working on building each company a dedicated knowledge base so that we can integrate their content, assets, branding, etc. The workflows all require human approval and are focused on helping business owners iterate with the help of AI to create cool content.

The entire platform is also pay as you go. You pay per post you create, so it’s built to fit any budget.

We’ve put together a quick demo showing Exponent AI in action: https://youtu.be/F-FOzF72gZ0

Let us know what you think!

Popularity: 1 points | 0 comments

63. Show HN: Encrypt Data Between Python and TypeScript (AES-GCM and RSA-OAEP)

Show HN: Encrypt Data Between Python and TypeScript (AES-GCM and RSA-OAEP) - Project Screenshot

URL: https://github.com/acadyne/cross-crypto-py

Author: acadyne

Description: Hi HN! I’m excited to share Cross-Crypto, a pair of libraries (Python [1] + TypeScript [2]) to encrypt data between frontend and backend with just 2 functions.

Problem I faced: Securing API payloads between React (TS) and Python is error-prone. Most solutions are language-specific or use outdated encryption.

Solution:

AES-256-GCM for data (authenticated encryption).
RSA-OAEP (4096-bit) for key exchange.
Works both ways: TS → Python or Python → TS.
Why it’s unique:
First lib focused on cross-language interoperability.
Handles key serialization/deserialization automatically.
100% test coverage for compatibility.
Try it:
TS: npm install cross-crypto-ts [3]
Python: pip install cross-crypto-py [4]
Would love feedback! (Code & docs on GitHub [4]).
[1] https://github.com/acadyne/cross-crypto-py [2] https://github.com/acadyne/cross-crypto-ts [3] https://npmjs.com/package/cross-crypto-ts
[4] https://pypi.org/project/cross-crypto-py
[5] https://github.com/acadyne

Popularity: 1 points | 0 comments

64. Show HN: A 2 file Hacker News bot

Show HN: A 2 file Hacker News bot - Project Screenshot

URL: https://github.com/Mtendekuyokwa19/hackernewsbot

Author: sonderotis

Description: Was trying to figure out how twitter bots work and I ended up building mine to fetch posts from hacker news

Popularity: 1 points | 0 comments

65. Show HN: Generate full RN mobile apps in minutes

Show HN: Generate full RN mobile apps in minutes - Project Screenshot

URL: https://rork.app

Author: danieldhawan

Description: Hey HN!

Me (@daniel_dhawan) & @LevanKvirkvelia built Rork, an app that generates mobile React Native apps using Expo in minutes. It generates apps that work on web too: and you can easily deploy & share them as web apps on rork.app subdomain.

Building mobile apps is really hard, and we hope to simplify this process. We experienced it ourselves as 3x consumer AI founders that grew React Native mobile apps to millions of users

We believe developing mobile apps should be as easy as building websites in Webflow.

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

Show HN Today: Top Developer Projects Showcase for 2025-02-12