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

A simple web-based tool for Spriting and Pixel art.

🚀 Curated collection of Amazing Python scripts from Basics to Advance with automation task scripts.

Open source game inspired by Dungeon Keeper - Dark, damp and dangerous... | *Not actively developed anymore*

OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

Official NetHack Git Repository

The MMORPG Meridian 59 - Server 103

Think DSP: Digital Signal Processing in Python, by Allen B. Downey.

Python DSP module

A Python wrapper for the high-quality vocoder "World"

Audio synthesis in Python.

A collective list of free APIs

Master the command line, in one page

ROguelike Toolkit in JavaScript. Cool dungeon-related stuff, interactive manual, documentation, tests!

Turn your Python application into an Android APK

Download your Spotify playlists and songs along with album art and metadata (from YouTube if a match is found).

Python GUIs for Humans! PySimpleGUI is the top-rated Python application development environment. Launched in 2018. NEW for 2026 - the LGPL3 Version 6. Transforms tkinter, Qt, WxPython, and Remi int…

The official source code repository for the calibre ebook manager

Open source UI framework written in Python, running on Windows, Linux, macOS, Android and iOS

Audio API for streaming raw data to speakers

Financial data platform for analysts, quants and AI agents.

Comprehensive Python Cheatsheet

🎮 📝 A list of Game Development resources to make magic happen.

Animated sprite editor & pixel art tool (Windows, macOS, Linux)

Valheim Mod Template

Clone of the Age of Empires II engine 🚀