open-source
be-a11y is a Node.js-based CLI tool designed for automated evaluation and reporting of accessibility issues in HTML-based projects. It supports both local directory scanning and remote URL analysis to help developers identify common accessibility problems.
A self hosted virtual browser that runs in docker and uses WebRTC.
Neko is a powerful tool that allows you to run a fully-functional browser in a virtual environment, giving you the ability to access the internet securely and privately from anywhere. With Neko, you can browse the web, run applications, and perform other tasks just as you would on a regular browser, all within a secure and isolated environment.
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Track your reading habits, log books, and visualize your library—all in your own space.
MyBibliotheca is a self-hosted personal library and reading tracker web app built with Flask. It lets you log, organize, and visualize your reading journey. Add books by ISBN, track reading progress, log daily reading, and generate monthly wrap-up images of your finished titles.
We're excited to introduce Chatterbox, our first production-grade open source TTS model. Licensed under MIT, Chatterbox has been benchmarked against leading closed-source systems like ElevenLabs, and is consistently preferred in side-by-side evaluations.
Single-node Kubernetes, reimagined for edge and embedded.
Ultra-lightweight, OCI-compliant, single-node Kubernetes built for constrained environments. No clustering. No etcd. Just what you need to run real workloads on real hardware—fast.
zizmor is a static analysis tool for GitHub Actions. It can find many common security issues in typical GitHub Actions CI/CD setups.
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Social Media via SSH.
itter.sh is your escape from the noise. It's a micro-blogging platform accessed entirely via SSH. No web browser. No JavaScript. No endless scroll of algorithmic 'content'. Just you, your trusty terminal, and 180 characters at a time ("eets"). Why? Because terminals are cool. Because less is more. Because sometimes, you just need to type.
A powerful self-hosted web scraping solution. Scrape websites without writing a single line of code.
Tiny & fast S3 client for node and edge platforms.
s3mini is an ultra-lightweight Typescript client (~14 KB minified, ≈15 % more ops/s) for S3-compatible object storage. It runs on Node, Bun, Cloudflare Workers, and other edge platforms. It has been tested on Cloudflare R2, Backblaze B2, DigitalOcean Spaces, and MinIO. (No Browser support!)
Markdown-first CMS for bloggers, minimalists and startups. Open Source alternative to Substack, Mailchimp and Netlify.
Task is a task runner / build tool that aims to be simpler and easier to use than, for example, GNU Make.
Since it's written in Go, Task is just a single binary and has no other dependencies, which means you don't need to mess with any complicated install setups just to use a build tool.
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Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.
Neon is a serverless Postgres platform designed to help you build reliable and scalable applications faster. We separate compute and storage to offer modern developer features such as autoscaling, branching, instant restore, and more.
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Unified MCP Server Implementation.
A comprehensive Model Context Protocol (MCP) server implementing the latest MCP 2025-03-26 specification. Demonstrates MCP capabilities including tools, resources, prompts, roots, and enhanced sampling with model preferences. Features HackerNews and GitHub API integrations with AI-powered analysis through advanced MCP sampling.
JavaScript Library for Timezone Lookup by Location.
Fast, memory-efficient time zone estimations from latitude and longitude.
A high-performance distributed file system designed to address the challenges of AI training and inference workloads.
The Fire-Flyer File System (3FS) is a high-performance distributed file system designed to address the challenges of AI training and inference workloads. It leverages modern SSDs and RDMA networks to provide a shared storage layer that simplifies development of distributed applications.
Data validation using Python type hints.
Pydantic is the most widely used data validation library for Python.
Fast and extensible, Pydantic plays nicely with your linters/IDE/brain. Define how data should be in pure, canonical Python 3.9+; validate it with Pydantic.
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Create custom SQLite functions in JavaScript. Extend your database with scalars, aggregates, window functions, and collations directly in JavaScript.
SQLite-JS is a powerful extension that brings JavaScript capabilities to SQLite. With this extension, you can create custom SQLite functions, aggregates, window functions, and collation sequences using JavaScript code, allowing for flexible and powerful data manipulation directly within your SQLite database.
Top-Rated Web-based Linux Server Management Tool.
🔥 1Panel provides an intuitive web interface and MCP Server to manage websites, files, containers, databases, and LLMs on a Linux server.
Kubernetes distribution for bare-metal, on-prem, edge, IoT.
k0s is the simple, solid & certified Kubernetes distribution that works on any infrastructure: bare-metal, on-premises, edge, IoT, public & private clouds. It's 100% open source & free.
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F2 is a cross-platform command-line tool for batch renaming files and directories quickly and safely. Written in Go!
A command-line vanity (public) key generator for WireGuard. By default, it only matches the prefix of generated public keys, and not whether the search matches anywhere in the public key. The concept is based on wireguard-vanity-address, however I wanted something a little more streamlined.
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Inline render-block-stable React hooks.
RenderHooks lets you place hooks right next to the markup that needs them—no wrapper components, no breaking the Rules of Hooks, and zero boilerplate, even when you supply your own custom hooks.
Core building blocks for AI apps. High-quality, accessible, and customizable components for AI interfaces.
Build chat experiences, AI agents, autonomous assistants, and more, quickly and beautifully.
container is a tool that you can use to create and run Linux containers as lightweight virtual machines on your Mac. It's written in Swift, and optimized for Apple silicon.
The tool consumes and produces OCI-compliant container images, so you can pull and run images from any standard container registry. You can push images that you build to those registries as well, and run the images in any other OCI-compliant application.
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Enhanced developer tools for React Native applications, supporting React Query DevTools and device storage monitoring with a beautiful native interface.
Beautiful macOS app for debugging React Query in ANY React-based application (Mobile, Web, TV, VR). Monitor queries across devices in real-time with a gorgeous native interface. Features device management, query visualization, state simulation, and automatic production safety. Works with React Native, React Web, Next.js, Expo, and any platform where.
🔍 cli utility for querying the node_modules directory.
I often need to quickly check the versions of the modules installed in the node_modules directory. Current solutions like running npm list are slow and produce a lot of irrelevant output. Checking the version in the package.json file of the specific module requires more effort and doesn’t provide information about other instances of the same module.
qnm is a tool that solves this problem by providing fast and focused information about the installed modules. It supports both npm and yarn and allows you to quickly identify the versions of the modules you are interested in.
Containerization is a Swift package for running Linux containers on macOS.
The Containerization package allows applications to use Linux containers. Containerization is written in Swift and uses Virtualization.framework on Apple silicon.
A more modern manual page viewer for our terminals.
Linux manual pages are lovely. They are concise, well-written, complete, and downright useful. However, the standard way of accessing them from the command-line hasn't changed since the early days.
Qman aims to change that. It's a modern, full-featured manual page viewer featuring hyperlinks, web browser like navigation, a table of contents for each page, incremental search, on-line help, and more. It also strives to be fast and tiny, so that it can be used everywhere. For this reason, it's been written in plain C and has only minimal dependencies.
Simple, blog-aware, static sites. Transform your plain text into static websites and blogs.
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ipdex is a simple CLI tool to gather insight about a list of IPs or an IP using the CrowdSec CTI (Cyber Threat Intelligence) API.
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Play to create Games
A small javascript library that lets you code video games even without programming experience. Odyc.js is a tiny JavaScript library designed to create narrative games by combining pixels, sounds, text, and a bit of logic. Everything is built through code, but without unnecessary complexity: your entire game can fit in a single file.
Build cross-platform .NET Applications in record time
Boost developer productivity with the most complete open-source platform and enterprise-grade tools. The Uno Platform is an Open-source platform for building single codebase native mobile, web, desktop, and embedded apps quickly.
It allows C# and WinUI XAML and/or C# code to run on all target platforms, while allowing you to control every pixel. It comes with support for Fluent, Material, and Cupertino design systems out of the box. Uno Platform implements a growing number of the WinUI APIs, such as Microsoft.UI.Xaml to build your UI, and WinRT to get cross platform access to non-UI APIs (sensors, file system, devices, etc...), to enable WinUI applications to run on all platforms with native performance.
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A tool that adds small enhancements to Claude Code.
- Reduced interruptions: Auto-handles permission dialogs based on configurable rules
- Flexible control: Rulesets define which actions to allow automatically
- Tool management: Toolsets configure which tools Claude can use
- Enhanced visibility: System notifications keep you informed
Just enough OS for KODI.
LibreELEC is a minimalist 'Just enough OS' Linux distribution for running Kodi. Our documentation can help you install and configure LibreELEC to run Kodi, or develop and build installation images using our buildsystem.
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🏝️ A CLI tool to replace and automate your daily web browser. Browser's End-user Automation CLI Hub. Potentialize All Tasks Regarding Online Life.
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Community-Powered Animation Magic. Get your animations easily done with only Tailwind CSS classes.
🔽 Display any CSV (comma separated values) file as a searchable, filterable, pretty HTML table
UV kernel for Jupyter.
reproducible, dependency-aware, and Git-friendly Jupyter Notebooks.
CJS/ESM ANSI color library for terminals, CI and Chromium-based browser consoles. Compatible with Bun, Deno, Next.JS.
ArduPilot is a trusted, versatile, and open source autopilot system supporting many vehicle types: multi-copters, traditional helicopters, fixed wing aircraft, boats, submarines, rovers and more. The source code is developed by a large community of professionals and enthusiasts. New developers are always welcome! The best way to start is by joining the Developer Team Forum, which is open to all and chock-full of daily development goodness.
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🐝 AI-powered browser assistant ("Cline for web browsing").
Cross-platform Xcode replacement. Build and deploy iOS apps with SwiftPM on Linux, Windows, macOS.
The fast, Pythonic way to build MCP servers and clients.
The Model Context Protocol (MCP) is a new, standardized way to provide context and tools to your LLMs, and FastMCP makes building MCP servers and clients simple and intuitive. Create tools, expose resources, define prompts, and more with clean, Pythonic code.
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Local-first data layer for high-performance apps. LiveStore is a next-generation state management framework based on reactive SQLite and git-inspired syncing (via event-sourcing).
LiveStore is a fully-featured, client-centric data layer (replacing libraries like Redux, MobX, etc.) with a reactive embedded SQLite database powered by real-time sync (via event-sourcing).
Markdown with superpowers
Letting ideas flow into your next presentation, paper or book.
Markdown meets the power of LaTeX in this modern typesetting system. And it's free and open source.
Quarkdown is a modern Markdown-based typesetting system, designed around the key concept of versatility, by seamlessly compiling a project into a print-ready book or an interactive presentation. All through an incredibly powerful Turing-complete extension of Markdown, ensuring your ideas flow automatically into paper.
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Automated AI localization for web & mobile apps.
AI localization for teams who ship fast. Translate apps, websites, and entire databases using the best LLM models.
KAI Scheduler is an open source Kubernetes Native scheduler for AI workloads at large scale
MonsterUI is a UI framework for FastHTML for building beautiful web interfaces with minimal code. It combines the simplicity of Python with the power of Tailwind. Perfect for data scientists, ML engineers, and developers who want to quickly turn their Python code into polished web apps without the complexity of traditional UI frameworks. Follows semantic HTML patterns when possible.
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A multi-standard open-source metadata editor.
Web tool to edit, validate, and manage metadata for Microdata (DDI Codebook), documents, tables, media, and geospatial data.
The library for web and native user interfaces.
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- JUST FUCKING USE REACT.
- Just Use React @ Epic React.
- Reactivity is easy @ romgrk.
- Level Up React: Deep dive into state and useState @ 56kode.
- The History of React Through Code @ Playful Programming.
- React Server Components: How We Got Here @ Epic React.
- The Useless useCallback @ TkDodo's blog.
- Let's Write React Hooks From Scratch @ Playful Programming.
- Unlocking Web Workers with React: A Step-by-Step Guide @ Rahul's Blog.
- React Won by Default – And It's Killing Frontend Innovation @ Loren Stewart.
- React’s useTransition and state update reordering @ Jordan Eldredge.
- Cut styled-components into pieces: This is our last resort @ Sanity.
- You may be looking for a useSyncExternalStore @ swizec.com.
- Stop using .reverse().find(): meet findLast() @ Matt Smith.
- React <ViewTransition>: Smooth Animations Made Simple @ certificates.dev.
- The nuance of React rendering behaviour as it relates to children @ Black Sheep Code.
- Concurrent Hydration with useSyncExternalStore @ kurtextrem.
- Server and Client Component Composition in Practice @ Aurora Scharff.
- State-based vs Signal-based rendering @ Jovi De Croock.
- React Server Components: Do They Really Improve Performance? @ Developer Way.
- Using Atomic State to Improve React Performance in Deeply Nested Component Trees @ Harbor.
- Why startups choose React (and when you shouldn't) @ Evil Martians.
- dead framework theory @ AI Focus.
- Using Atomic State to Improve React Performance in Deeply Nested Component Trees @ Harbor.
- ChatGPT as My Coding Mentor: How I Learned React and Next.js as a Junior Developer @ iO tech_hub.
- Absolutely everything you need to know about act() in React tests @ HowToTestFrontend.
- Why use React? @ adactio.
- The next era of React has arrived: Here’s what you need to know @ LogRocket.
- React has finally solved its biggest problem: The joys of useEffectEvent @ LogRocket.
- useOptimistic Won't Save You @ Colum Kelly.
- Building Bulletproof React Components @ Shu Ding.
- Frontend Memory Leaks: A 500-Repository Static Analysis and Five-Scenario Benchmark Study @ StackInsight.
- Understanding Why React Fiber Exists @ Sanku.
- Start naming your useEffect functions, you will thank me later @ Neciu Dan.
- use(): The Hook That Breaks the Rules (On Purpose) @ Sascha Becker.
- I let React Compiler handle memoization: Here’s what actually broke @ LogRocket.
- React useOptimistic: Optimistic UI Patterns That Actually Work (2026) @ Carlos Oliva Pascual's dev.to.
FlowGram is a node-based flow building engine that helps developers quickly create workflows in either fixed layout or free connection layout modes.
LumoSQL is a modification (not a fork) of the SQLite embedded data storage library, which is among the most-deployed software. LumoSQL adds security, privacy, performance and measurement features to SQLite.
The Google Gen AI JavaScript SDK is designed for TypeScript and JavaScript developers to build applications powered by Gemini. The SDK supports both the Gemini Developer API and Vertex AI.
Domain Name Threat Intelligence.
The openSquat is a tool for identifying domain look-alikes by searching for newly registered domains that might be impersonating legit domains and brands.
Private AI Assistant. A fully local alternative to Manus AI. Voice-enabled AI assistant that autonomously browses the web, writes code, and plans tasks while keeping all data on your device.
- [AgenticSeek @ GitHub](https://github.com/Fosowl/agenticSeek}.
A programming language designed to fix Go’s frustrating design choices — without sacrificing its strengths 👾
Gauntlet is a programming language designed to address many of Golang’s shortcomings. It transpiles exclusively to Go code, fully supports all of its features, and integrates seamlessly with its entire ecosystem — without the need for bindings.
snapDOM captures HTML elements as images with exceptional speed and accuracy.
git-spice is a tool for stacking Git branches. It lets you manage and navigate stacks of branches, conveniently modify and rebase them, and create GitHub Pull Requests or
GitLab Merge Requests from them.
It works with Git instead of trying to replace Git. Introduce it in small places in your existing workflow without changing how you work wholesale.
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