Steam GitHub Repositories (2026) · Open Source Tools

Native PC gaming with Steam, Epic, GOG and Amazon integrations on Android

Run Windows games on Apple Silicon — free, open source, with an open compatibility database that tells you what actually works.

Video wallpapers for macOS, from your own videos or Wallpaper Engine's Steam Workshop — picked from System Settings' Wallpaper pane

An open-source framework for Steam Client themes and plugins

An ASF plugin for finding and redeeming free Steam games

C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.

The ultimate community-driven, and open-source competitive rhythm game available on Steam.

A beautiful, local-first game library built for Omarchy.

Your Windows gaming PC, with the soul of a gaming console.

Source 2 Viewer is an all-in-one tool to browse VPK archives, view, extract, and decompile Source 2 assets, including maps, models, materials, textures, sounds, and more.

Skip extracting files, navigating setup processes, or any unnecessary hassles.

LAN-first Steam emulator: Steamworks API client emulation + server-side Game Coordinator (Dota 2 lobbies/parties/match stats), for full offline multiplayer without Steam or internet connection

A mod to make and play Terraria mods. Supports Terraria 1.4 (and earlier) installations

📱 Two-Factor Authentication (2FA) client for Android + Wear OS

Steam depot downloader utilizing the SteamKit2 library.

SteamKit2 is a .NET library designed to interoperate with Valve's Steam network. It aims to provide a simple, yet extensible, interface to perform various actions on the network.

📃 Next-generation Valve's key value framework for .NET

An Android app for playing Windows games from Steam, Epic Games, GOG, and more on your device.

A simple Gtk wrapper for Adwaita-for-Steam

Dota2 Mod Patcher & Toolkit for everyone to use mods easily