valvesoftware

View, inspect, and pose 3D character models from Valve's Deadlock.

Valve Machine Front LED panel emulation for Steam OS using WLED

L4D Speedrunning Wiki - hosting technical L4D knowledge

SteamOS community tracker

The 2013 edition of the Source SDK

Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption.

Based entirely on FN-FAL113/server-picker-x, Server picker for CS2, Deadlock and Marathon with a different UI and new QoL features.

CS:GO

OpenVR plugin for Unity's XR API

OpenVR SDK

Patched branches of Mesa used in SteamOS

Counter-Strike: Global Offensive

dxvk tree containing branches used by Proton

Source 1 based games such as TF2 and Counter-Strike: Source

List of devices Steam and SteamVR will want read/write permissions on, to help downstream distributions create udev rules/etc

Tracker for issues specific to the Vulkan version of Dota 2 on Windows, Linux, and macOS

OpenVR Driver for Razer Hydra using Sixense SDK

Contains Valve-provided plugins for using OpenXR extensions with various game engines

Public Bug Tracker for Dota 2