freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

📚 Freely available programming books

A list of Free Software network services and web applications which can be hosted on your own servers

An agentic skills framework & software development methodology that works.

A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools and more.

🎓 Path to a free self-taught education in Computer Science!

An Open Source Machine Learning Framework for Everyone

Visual Studio Code

Flutter makes it easy and fast to build beautiful apps for mobile and beyond

Display and control your Android device

Command-line program to download videos from YouTube.com and other video sites

LLM inference in C/C++

An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer.

Robust Speech Recognition via Large-Scale Weak Supervision

Ghidra is a software reverse engineering (SRE) framework

Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4, MiniMax-H3, Gemma 4, FLUX and more.

Tesseract Open Source OCR Engine (main repository)

A simple zero-config tool to make locally trusted development certificates with any names you'd like.

Joplin - the privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and iOS.

C++ based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)

Meteor, the JavaScript App Platform

The swiss army knife of lossless video/audio editing

TensorFlow Tutorial and Examples for Beginners (support TF v1 & v2)

Self-hosted game stream host for Moonlight.

Open-source foundation of ToolJet AI - the enterprise app generation platform for internal tools, dashboards, business applications, workflows and AI agents. Build visually, from a prompt, or from …

Metasploit Framework

The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.

NVR with realtime local object detection for IP cameras

Command-line JSON processor

A curated list of amazingly awesome open-source sysadmin resources.