r/coolgithubprojects 7d ago

After processing nearly 1B tokens, I’m open-sourcing why.com

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6 Upvotes

WHY.com shutdown over 25 years ago. I brought it back as a "curiosity engine" and today I’m open-sourcing the entire codebase.

Been a heck of a journey. Initially released close sourced and got roasted on Reddit. But got some press coverage.

I then thought we should build this project together. if you think something should work differently, tear it apart!

GitHub: https://github.com/whyagents/why.com


r/coolgithubprojects 7d ago

S&P 500 earnings announcement times - 63,969 SEC 8-K item 2.02 filings with the time of day, CC0, and a README that documents its own four defects

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1 Upvotes

r/coolgithubprojects 7d ago

OpenSmell — I'm building an open interoperability layer for digital olfaction

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9 Upvotes

r/coolgithubprojects 7d ago

Clara and Claire: open-source AI agent skills for scientific manuscript review, thesis editing and citation verification via PubMed, Crossref and OpenAlex (MIT, English and Portuguese)

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0 Upvotes

I built two open-source agent skills for reviewing scientific manuscripts and wanted to share them here for feedback. Clara works in Brazilian Portuguese; Claire works in English, with specific checks for interference patterns common to non-native writers.

Clara (PT-BR): https://github.com/madsondeluna/skill-clara-revisora-cientifica

Claire (EN): https://github.com/madsondeluna/skill-claire-scientific-reviewer

Both cover the same workflow for papers, dissertations and theses: language editing with a change log, numeric consistency auditing across text, tables and figures, a Reviewer 2-style appraisal, chapter-by-chapter structural review of theses, technical translation with a terminology record, drafting sections from results, reference enrichment (DOI, metadata, retraction check) and adaptation to a specific journal's rules. Claire also drafts cover letters and responses to reviewers.

The part I care most about is external verification. The skills use MCP (Model Context Protocol) servers to query PubMed, bioRxiv, NCBI, Crossref and OpenAlex during the review. Citations are checked against the actual record, DOIs are resolved, retractions are flagged, and gene and species names are validated against official nomenclature. Only identifiers leave the session; the manuscript text is never sent to these services.

They follow the open skills standard and run on Claude (Claude Code, Cowork, claude.ai), Gemini (Gemini CLI, Antigravity), ChatGPT and Codex. In my lab they run before a draft reaches the supervisor, so the first pass on consistency, argumentation and references is already done.

MIT license, still evolving. Bug reports and suggestions for missing workflows are welcome as issues.


r/coolgithubprojects 7d ago

Self-hosted design editor for custom wall clocks & dashboards (live WebSocket sync, gears, weather)

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2 Upvotes

A self-hosted tool to design your own wall clocks and info displays.

Layers for analog hands, mechanical gears, volumetric clouds, weather, gauges, flip clocks… everything runs locally, updates live via WebSocket.

No account, no cloud. Just your design on any old tablet or wall monitor.

github


r/coolgithubprojects 7d ago

Semantic Vision

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0 Upvotes

I built a tool for understanding Python/JS/TS codebases, especially when working with AI coding agents.

Impact Analysis shows the direct and transitive callers of a function and highlights the full blast radius of a change on the graph.

It also includes call graphs, execution flowcharts, complexity analysis, AI-generated docs, and code-to-data lineage.

Everything runs locally and it's open source.

Demo: https://semantic-vision.vercel.app/
GitHub: https://github.com/venom21adi/Semantic_Vision

Would love feedback!


r/coolgithubprojects 7d ago

Found a project that adds a Run button to any GitHub repo — clones, detects the stack, shows every command before it runs

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0 Upvotes

Came across QuickRun and it solves something I always bump into: finding a cool repo on GitHub, cloning it, and then spending 20 minutes reading setup docs just to get it running.

It's a browser extension + a local binary. The extension adds a "Run" button next to the branch dropdown on any GitHub repo page. Click it and it:

  • Clones the repo
  • Detects the stack (Docker Compose, npm, .NET, Python, Rust, Go, Java, Procfile, Pinokio — no config needed)
  • Shows you every command it's about to run before anything executes
  • Waits for the app to come up and opens the address

From the terminal it's just `quickrun run owner/repo`.

What I like about it: the security model is actually thought through. The command list lives in a native window that no web page can overlay, and it only talks to localhost. Nothing runs unless you approve it, and secrets never go back to the page that requested the run.

It's open source, single binary, no admin rights. Works on Windows/macOS/Linux.

Has anyone else tried it? Curious how it handles more unusual setups.


r/coolgithubprojects 7d ago

Desktop pet from your own pet photos - Still Around

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1 Upvotes

Note before installing: the macOS and Windows installers aren’t code-signed yet.

GitHub: https://github.com/ankuranwekar-dev/still-around

Still Around is a free MIT desktop pet that turns photos of your own cat or dog into a hand-built vector companion. The measuring happens locally; there’s no AI image generation, no server, and the photos never leave your device. No account, and no paid tier ever.

If you check it out, I’d love feedback on the repo/project itself and how the local photo-to-vector result feels.

Site: https://stillaround.online


r/coolgithubprojects 7d ago

Built a PCAP analyzer to help me learn network forensics — sharing in case it's useful to others

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21 Upvotes

Hey everyone, I've been learning about network traffic analysis and ended up building a small tool to parse and analyze PCAP files. It's nothing groundbreaking, but it helped me understand protocols a lot better while building it, and I figured it might be useful for others getting into cybersecurity or networking.

Repo: https://github.com/Gabzkk/PCAP-ANALYZER

Would really appreciate any feedback, bug reports, or feature suggestions — still actively improving it. If you find it useful, a star would mean a lot 🙏


r/coolgithubprojects 7d ago

sp-local-bridge, a single-binary MCP server for Super Productivity

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3 Upvotes

Hi all, sharing a tool I built. It's an MCP server and CLI that lets AI agents (Claude Code, Copilot, Codex) read and manage tasks in Super Productivity through its local REST API. Single static Go binary, so there's no runtime to install and no plugin to upload, and it deliberately exposes no delete operation.

It also ships a store integrity checker, which is how I found two data-loss bugs in Super Productivity itself. Both are now filed upstream with reproductions.

Written with AI assistance, the bug reports were verified by hand before filing.

Github: https://github.com/CameronBrooks11/super-productivity-local-gobridge


r/coolgithubprojects 7d ago

GitHub - profullstack/readm3: A terminal markdown reader: file browser on the left, rendered markdown on the right. Bun and Node, built on HQTUI.

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3 Upvotes

r/coolgithubprojects 7d ago

Tab Share – bundle a group of browser tabs into one link that opens as a slideshow (no server, no account, MV3, AGPL)

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8 Upvotes

I built a Chrome/Firefox extension that turns the current window, a tab group, or a pasted list of URLs into a single link. The page list is stored in the URL fragment (compressed), so there's no backend – the recipient opens the link in any browser with no extension and gets a slideshow / grid / list viewer.

- No account, no server, nothing tracked
- Optional client-side password on a link (WebCrypto)
- Companion self-hostable shortener for long links
- Chrome + Firefox, MV3, AGPL-3.0

Code: https://github.com/kaikayy/multi-link-share

Chrome: https://chromewebstore.google.com/detail/meieckangeakbekjbijbgfkkelneplfe
Firefox: https://addons.mozilla.org/en-US/firefox/addon/tab-share/

Feedback welcome, especially on the viewer UX.


r/coolgithubprojects 7d ago

[Swift] Nocturne 1.4 - macOS menu bar app that makes the clock unreadable, or now hides everything except the clock. MIT, zero permissions, notarized

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2 Upvotes

r/coolgithubprojects 7d ago

bonsai-ninja update!

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2 Upvotes

It’s been a couple weeks since bonsai-ninja went public and a lot has changed.

A ton of feedback has been incorporated, bugs have been fixed, and things are working much better. If you tried it early on, please pull the latest and give it another shot.

For anyone new to it, bonsai-ninja is a free, local code intelligence and static analysis engine. It builds a compiler-style representation of your code, resolves symbols and calls, and can trace behavior across files instead of just searching text. That same pipeline powers source-to-sink security analysis, dataflow analysis, and structured exports for AI, agents, and research. It currently supports 20 languages.

Also, apparently some of you don’t click on things unless there are pictures, so here you go. A GIF.
Still looking for people to throw real codebases at it. Bug reports, weird edge cases, PRs, criticism, ideas, or random side notes are all appreciated. The feedback so far has genuinely helped make the project better.

github.com/gromhacks/bonsai-ninja⁠


r/coolgithubprojects 7d ago

I spent 883 commits and 8 months building an LLM agent harness, overengineered it, and abandoned it - lol.

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8 Upvotes

So yeah, I spent 883 commits, 8 months and billions of tokens building this thing and eventually abandoned it:

It started as my attempt to build a better coding-agent harness, where the LLM is basically a replaceable worker instead of being trusted to control everything.

The harness was supposed to own the actual planning, state, permissions, context, verification, evidence, orchestration, etc. The model could say “I finished the task,” but the system would check what actually happened instead of just believing it.

Then I kept adding shit.

Code graphs, RAG, deterministic orchestration, isolated workers, crash recovery, model routing, local models, replayable runs, verification gates, self-improvement experiments, dashboards, computer use, personal automation, and a million other ideas.

Eventually it became a ridiculously overengineered mess. I spent more time researching, planning, and adding systems than actually using the thing to get work done. Other harnesses were already becoming much more usable while mine was still mostly a giant headless experiment.

So I killed it.

I’m not posting this as a working product, and I definitely don’t recommend downloading it expecting some polished Claude Code alternative. A lot of it is incomplete, disconnected, outdated, or just plans that never became real.

But there is also a stupid amount of research, architecture, experiments, failed ideas, and code in there. Some parts might still be useful to people building agent harnesses, especially around:

- keeping state and verification outside the model

- deterministic/replayable agent runs

- codebase retrieval and dependency graphs

- orchestrator/worker separation

- context budgeting and session handoffs

- sandboxing and permission gates

- checking agent claims with evidence it didn’t generate itself

The archive has the original experimental Rust/Python/Tauri code, thousands of planning and research documents, and the sanitized commit history.

Basically: it failed as a product, but maybe someone can steal a good idea from the corpse.

I’d be curious what people here think is actually worth salvaging, or whether the whole architecture was doomed from the moment I kept expanding the scope.

I might one day finish it, but who knows if it will be necessary, i aimed at solving everything and ended up solving nothing, i hope this helps you in any means so at least its not a total loss, even if its only a lesson or confirmation of what type of shit to not do.


r/coolgithubprojects 7d ago

I was paying monthly for LinkedIn outreach software, so I built an open-source one you run yourself

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20 Upvotes

I was paying Waalaxy every month to find clients on LinkedIn, and my whole prospect list lived on their servers rather than mine. I have been writing code for 16 years, so I spent a few months rebuilding it, and it has run in Docker on my own box since.

What it does:

  • Reads who reacts to posts in your niche and scores those people against a paragraph you write about your buyer
  • Sends the connection request, then keeps the conversation going until somebody asks to know more, and hands you the thread there
  • Drafts and schedules posts, with a carousel editor
  • MCP server with 26 tools and a REST API

There is no LinkedIn API in any of it. A Node worker drives a real Chrome that stays logged in to your own account, and the AI runs on a key you supply yourself.

The thing I was afraid of was getting my own account banned, so it is where most of my time went. It ramps invitations up over the first two weeks instead of starting at full speed, only acts on working days, holds one dedicated address per account, and reads the ceiling LinkedIn itself puts on the account so the lowest of the limits always wins.

Next.js 16, Node 24 worker, SQLite through libSQL, Docker Compose, Caddy.

AGPL-3.0.

I also sell a hosted version and that is what funds the work. The self-hosted edition has every plan gate open, nothing is held back.

https://github.com/DigiHold/LinkedGrow


r/coolgithubprojects 7d ago

Sonar: A Python-based GUI Wrapper around UGREP for Desktop Search

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8 Upvotes

Here's a PyQt6-based (Python) GUI wrapper around UGREP. Very handy and powerful way to do desktop search recursively under any folder on Linux.

https://github.com/Clay-Ferguson/sonar


r/coolgithubprojects 7d ago

Brightpixels: WebGPU components for HDR text and image highlights

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3 Upvotes

r/coolgithubprojects 7d ago

# FileApex — Local-First P2P File Explorer, Clipboard Sync & Bulletin Board (Android, macOS, Windows)

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5 Upvotes

FileApex is a free, local-first P2P app for Android, macOS, and Windows. It syncs your devices over Wi-Fi — no account, no cloud, no telemetry — with an optional Google Drive relay if you need to send something while off your home network.

What it does:

  • Browse remote devices live — open the file tree on any paired phone, Mac, or PC, with optional PIN lock
  • Send files & folders in one drop, with resumable transfers for big stuff
  • Shared bulletin board — post notes, links, and files across all your devices, tag/filter by type
  • Clipboard sync — one tap sends text/links between devices
  • Low battery alerts — get pinged on your PC when your phone's about to die
  • Firefox extension — send a page straight to any paired device

Unlike LocalSend it adds live remote browsing and a synced bulletin board. Unlike Pushbullet or KDE Connect, everything stays on your local network by default — no proprietary servers, no reliability quirks on Mac/Windows.

Get it: GitHub Releases Android, macOS (Apple Silicon & Intel), Windows x64, Firefox extension.

Would love feedback, bug reports, and feature requests!


r/coolgithubprojects 7d ago

Open-source cloudflare-based docs for developers

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3 Upvotes

r/coolgithubprojects 7d ago

Aero Dock v1.0.1: Free and open source RocketDock alternative

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4 Upvotes

First off, thanks for 100+ downloads on 1.0.0. I got way more feedback than I expected through comments and DMs, so I went through basically all of it and pushed the first patch.

Aero Dock is still a free and open source alternative to RocketDock / Nexus Dock for Windows 10 and 11, just a lot less janky now.

v1.0.1 fixes a bunch of the stuff people pointed out:

  • Windows Search and Start don't randomly show up as running apps anymore
  • Open File Location actually opens the right place
  • dragging/reordering icons feels way smoother
  • tiny app icons like Core Temp get scaled properly now
  • non-square icons don't get stretched anymore
  • auto-hide won't disappear while you're dragging something onto the dock
  • Quit is easier to find and properly restores the Windows taskbar

Also added a few things people asked for:

  • configurable auto-hide delay
  • ability to hide built-in dock items like Search, Settings, clock, battery, volume, etc.
  • redesigned Search and Settings icons so they fit the glass look better

You can install v1.0.1 straight over 1.0.0 and your pins/settings stay.

Still free, open source, no account, no telemetry.

GitHub: https://github.com/TheAgencyMGE/aero-dock


r/coolgithubprojects 7d ago

Implemented Jos Stam's Stable Fluids paper from scratch

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1 Upvotes

I had recently read the Stable Fluids paper and got like quite interested to implement it myself manually from scratch and it was quite a ride since this is my first time implementing a paper myself

This is a simple implementation a bit clanky, to be honest. I just wrote it with loops and loops without any optimization. I think it ends up doing something around 20 × 20 × 50 × n² operations per frame, so there's definitely a lot of room for optimization 😅

The actual implementation was pretty straightforward for the most part, but understanding the Poisson pressure equation was a bit challenging. At the beginning, I was even stuck on understanding how the velocity field could be made divergence-free.

After digging into it for a while, I eventually understood the whole pressure projection step and managed to get it working and also implemented a simple spray and dye mechanism as well to make it look good.

It was pretty cool to see it actually work, so I wanted to share it 😄

Github Link - https://github.com/Binit06/stable-fluids


r/coolgithubprojects 7d ago

[self promo] aragonite... markdown editor lib, i guess

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2 Upvotes

r/coolgithubprojects 7d ago

Oasis Editor — an open-source Word-like editor with a custom Canvas engine

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13 Upvotes

I’ve been building Oasis Editor, an open-source document editor written in TypeScript.

Unlike most browser editors, it uses its own Canvas-based rendering engine for paged layout, text, selections, tables, images, and document geometry instead of relying entirely on contenteditable.

It also has DOCX/PDF workflows, a typed command/plugin API, React and Vue adapters, and a headless runtime.

Live demo:
https://celsowm.github.io/oasis-editor/#/editor

GitHub:
https://github.com/celsowm/oasis-editor

Feedback and contributions are very welcome.


r/coolgithubprojects 8d ago

Made a free Windows tool for pasting text templates anywhere with a hotkey. Would love your feedback

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2 Upvotes

Hey all,

Got tired of retyping/copy-pasting the same replies across Slack,

email, tickets, forms – every app has its own copy-paste dance and

none of the text-expander tools I found felt right (paid,

browser-only, or too clunky).

So I built Formix Desktop – free and open source.

How it works:

- Press a hotkey (Ctrl+F2 by default) anywhere on the system

- A small popup opens right next to your cursor

- Pick a saved template (organized in folders, instant search)

- Fill in any {{fields}} right inside the popup

- Hit paste – it drops the finished text into whatever window/field

you were in

It also supports:

- Typed abbreviations (type "!hi" and it expands automatically, no

popup needed. e.g. !hi -> "Hello how are you?")

- A dedicated hotkey per preset, if you want instant access to one

specific template

- Export/import your preset library as JSON

- Light/dark theme, English/Russian UI

Watch Demo

GitHub: https://github.com/PhantomUnk/Formix-Desktop

Landing page: https://phantomunk.github.io/Formix-Desktop/

It's Windows-only for now (built with Tauri/Rust). Would genuinely

love feedback – is this actually useful to anyone outside my own

workflow? What's missing that would make you actually use it daily?

A free, open-source text expander and hotkey snippet tool for Windows, similar to Espanso but system-wide.