Help out your favorite open source projects and become a better developer while doing it.

Pet Rescue is an application making it easy to link adopters/fosters with pets. We work with grassroots pet rescue organizations to understand how we can make the most impact.

A low-level JS video API that allows adding a completely custom video experience to web apps.

Route-centric navigation built on top of React Native's Navigator

Create beautiful and low-effort forms that output valid data. Published on npm as @koumoul/vjsf.

Quickly ramp up in new programming languages.

Quickly ramp up in new programming languages.

A zero-dependency JavaScript library that converts standard HTTP URLs (YouTube, LinkedIn) into Native Mobile Deep Links (Custom Schemes & Android Intents).

Date and time validation plugin for ActiveModel and Rails. Supports multiple ORMs and allows custom date/time formats.

Live sidebar, ER diagrams, CLI, and MCP server for Django models. VS Code + PyPI + MCP Registry + Glama. Zero-dep parser, no DB required.

🎖 seamless redux-first routing -- just dispatch actions

Gaussian processes in JAX.

Functional typed classnames for TailwindCSS

An application to vote on proposals where votes are weighted proportional to the voter's balance of a coin

An open source, markdown-based, self-hosted note taking webapp.

Prettier Ruby Plugin

Database CRUD Application Built on Electron | MySQL, Postgres

Crowd-sourced code mentorship. Practice having thoughtful conversations about code.

PHP implementation of the telegram MTProto protocol (better tg-cli).

Apache Answer official website.

:snowflake: A PHP library for generating universally unique identifiers (UUIDs).

AI agents and workflows for Kotlin Multiplatform, as small typed graphs: loops, parallel steps, streaming, save points and human approval. Inspired by LangGraph.

🕉 Soul | Automatic SQLite RESTful and realtime API server | Build CRUD APIs in minutes!

The JMeter Maven Plugin

The Official Golang driver for MongoDB

A tool for developers to create cloud-native applications on Kubernetes.

VIP cheatsheets for Stanford's CS 229 Machine Learning

An elixir haml parser

Ruby framework for robotics, drones, and the Internet of Things (IoT)

Rapid Web Development w/ Go

Handle unread records and mark them as read with Ruby on Rails

🍰 Everything is RSSible

A jQuery tabs module for todays web!

A Rack profiler for web applications.

简单、跨平台、无依赖的全屏滚动H5插件，适配PC和移动端，具有单屏内容滚动、控制动画播放等特色功能

Hi. I'm a starter theme called _s, or underscores, if you like. I'm a theme meant for hacking so don't use me as a Parent Theme. Instead try turning me into the next, most awesome, WordPress theme out there. That's what I'm here for.

Open source forkable Ethereum dev stack

A Rack profiler for web applications.

Reactive Programming in Swift

Pa11y Webservice provides scheduled accessibility reports for multiple URLs

An example of BehaviouralSubject in Angular

A tool for syncing a directory (AD, LDAP, Azure, G Suite, Okta) to an organization.

Visualizing the javascript runtime at runtime

A highly scalable real-time graphing system

Ruby wrapper for hiredis

A readonly ActiveRecord-esque base class that lets you use a hash, a Yaml file or a custom file as the datasource

ffscreencast - ffmpeg screencast/desktop-recording with video overlay and multi monitor support

Adapter for SpecFlow (generate HTML report for SpecFlow)

JavaScript Cloud/Web Desktop Platform

GitHub markdown preprocessor.

An idiomatic, lean, fast & safe pure Rust implementation of Git