Media Player Classic

Compatibility tool for Steam Play based on Wine and additional components

Classic Shell Reborn.

A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once

Snes9x - Portable Super Nintendo Entertainment System (TM) emulator

Xbox 360 Emulator Research Project

Volt (VPhysics Jolt) is a replacement physics module for the Source Engine.

Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses

Discord Messenger is a free Discord-compatible messaging client targeting both new and old Windows.

Reverse-engineered HLDS

Acrylic effect for all existing Win32 context menus

A Wii homebrew application that can prevent and fix some user level bricks

ROM Properties Page shell extension

DroidCam OBS Source

Remote Desktop Plugin for Xbox Gamepads

The old Team Fortress 2 source code ported to Source SDK 2013

This is Mapbase's public GitHub repo. It contains all of the code, but not the assets.

A CLI/GUI tool to create, read, and write several pack file formats.

Source SDK 2013 Community Edition is a fork of the 2013 sdk repo of the source engine which fixes most of the things that were previously broken in the normal sdk so that mod developers can start u…

Team Fortress 2, but with a lot of fixes, QoL improvements and performance optimizations!

MetaHook (https://github.com/nagist/metahook) porting for SvEngine (GoldSrc engine modified by Sven-Coop)

Source code for GamepadUI for Half-Life 2 and friends.

C++ Parser and Writer for Valve Data Format (e.g. .vdf files used in steam)

Original HL2 Source SDK from 2004

A repo containing the source code for Team Fortress 2 Classic

The Portal 2 In Alien Swarm Engine project repository

Tools for Playstation 2 Half-Life port

Windows 2000/XP-style shutdown/log off dialog for modern Windows.

An OpenWith.exe replacement that replicates the Windows XP, Vista, and 7 look.