Find Your Dream Job by Contributing to OSS

Official Linux kernel source tree; a monolithic OS kernel powering servers, Android devices, and embedded systems; licensed under GPL‑2.0‑only with the Linux‑syscall‑note.

Lean is an open-source, event-driven algorithmic trading engine by QuantConnect for strategy research, backtesting, and live trading. It features a modular, extensible architecture with out‑of‑the‑box alternative data and live‑trading support, and runs cross‑platform.

VeighNa (vn.py) is an open‑source, Python‑based quantitative trading framework that has evolved into a full‑feature platform. It provides an event‑driven core, many exchange/broker gateways, strategy engines (CTA, portfolio, options), backtesting, data services, risk management, web services (REST/WebSocket), and charting to build and run trading applications.

Sherlock is an open-source OSINT CLI that hunts for where a given username exists across 400+ social networks, returning matches to aid reconnaissance. It is actively maintained, packaged for PyPI and Docker, and documented on its website, making it easy to install and use.

n8n is a fair‑code workflow automation platform with native AI capabilities that lets users combine a visual builder with custom code. It can be self‑hosted or run in the cloud and includes hundreds of pre‑built integrations, supporting AI‑agent workflows on user data and models.

Excalidraw is an open‑source, hand‑drawn‑style virtual whiteboard and editor that can be embedded as a component or used via the app at excalidraw.com. It supports real‑time collaboration with end‑to‑end encryption, works offline as a PWA, and lets users create and export diagrams, wireframes, and more.

PaddleOCR is an open-source, production‑ready OCR and document AI engine built on Baidu's PaddlePaddle deep‑learning platform. It converts PDFs and images into structured, AI‑ready data such as JSON or Markdown, supporting over 100 languages and offering end‑to‑end pipelines for text detection, recognition, and complex document parsing.

yt-dlp is a feature‑rich command‑line audio/video downloader that supports thousands of sites. It is a fork of youtube‑dl (via the now‑inactive youtube‑dlc) focused on enhanced functionality and active maintenance.

AppFlowy-IO/AppFlowy is the GitHub repository for AppFlowy, an open-source AI-powered collaborative workspace and the leading alternative to Notion. It enables users to manage projects, wikis, notes, and team collaboration with full data privacy, self-hosting capability, and offline support across desktop, mobile, and web platforms.

Warp is an agentic development environment born out of a modern, Rust‑based terminal. It integrates a built‑in coding agent and supports bringing your own CLI agents (e.g., Claude Code, Codex, Gemini CLI) to accelerate coding, automation, and orchestration of developer workflows.