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

An open-source & self-hostable Heroku / Netlify / Vercel alternative.

🚀 The easiest way to automate building and releasing your iOS and Android apps

Distributed transactional key-value database, originally created to complement TiDB

Making Docker and Kubernetes management easy.

Apache Maven core

The Serenity Operating System 🐞

Vagrant is a tool for building and distributing development environments.

Vagrant is a tool for building and distributing development environments.

SeaweedFS is a fast distributed storage system for blobs, objects, files, and data lake, for billions of files! Blob store has O(1) disk seek, cloud tiering. Filer supports Cloud Drive, cross-DC active-active replication, Kubernetes, POSIX FUSE mount, S3

wallabag is a self hostable application for saving web pages: Save and classify articles. Read them later. Freely.

Google core libraries for Java

Next generation frontend tooling. It's fast!

Dify is an open-source LLM app development platform. Dify's intuitive interface combines AI workflow, RAG pipeline, agent capabilities, model management, observability features and more, letting you quickly go from prototype to production.

Apache Iceberg

👽 API request builder - Helps you create your requests faster, saving you precious time on your development https://postwoman.io

The Markdown-based note-taking app that doesn't suck.

👽 Open source API development ecosystem - https://hoppscotch.io

One framework for creating powerful cross-platform games.

CircuitVerse Primary Code Base

The FRRouting Protocol Suite

A fast JSON parser/generator for C++ with both SAX/DOM style API

A query builder for PostgreSQL, MySQL and SQLite3, designed to be flexible, portable, and fun to use.

Modin: Scale your Pandas workflows by changing a single line of code

:speech_balloon: A community-driven python bot that aims to be as simple as possible to serve humans with their everyday tasks

music library manager and MusicBrainz tagger

Gin is a HTTP web framework written in Go (Golang). It features a Martini-like API with much better performance -- up to 40 times faster. If you need smashing performance, get yourself some Gin.

Create agents that monitor and act on your behalf. Your agents are standing by!

Create agents that monitor and act on your behalf. Your agents are standing by!

Theano is a Python library that allows you to define, optimize, and evaluate mathematical expressions involving multi-dimensional arrays efficiently. It can use GPUs and perform efficient symbolic differentiation.

A super fast Graph Database uses GraphBLAS under the hood for its sparse adjacency matrix graph representation. Our goal is to provide the best Knowledge Graph for LLM (GraphRAG).

lichess.org mobile application

The Bluesky Social application for Web, iOS, and Android

Bears for coala

MODX Revolution - Content Management Framework

The Stacks blockchain implementation

OpenTelemetry Collector

The repository for high quality TypeScript type definitions.

E2E test framework for Angular apps

Ansible Community General Collection

Federated (ActivityPub) video streaming platform using P2P (BitTorrent) directly in the web browser with WebTorrent and Angular.

Bitcoin Core integration/staging tree

Staggeringly powerful OS X desktop automation with Lua

🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with LlamaIndex, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

:gem: A fast, open source text processor and publishing toolchain, written in Ruby, for converting AsciiDoc content to HTML 5, DocBook 5, and other formats.

Quasar Framework - Build high-performance VueJS user interfaces in record time

Printing since 1440. Development hub for the editor focus in core. Plugin is available from the official WordPress repository.

Free and open source manga reader for Android

Video.js - open source HTML5 video player