- Source SDK Release Notes
- Source SDK FAQ
- Developer Console
- Source SDK Files and Directory Structure
- Demo Recording Tools
- Source TV
- Source Multiplayer Networking
- Steam 3rd Party Mod Support
Make Source's characters come to life with its uniquely powerful choreography technologies.
AI controls the behaviour of all but the simplest of NPC actions and Source makes using or creating it easy.
Textures and shaders are combined in Source to create materials.
Documentation on Source's software sound system.
Everything you need to know about modelling for Source.
Valve's proprietary GUI mimicks Windows' and works both in-game and on the desktop. Used for interfaces, HUDs, and dynamic displays in the 3D game environment, if you want to display information VGUI is the answer.
The nuts and bolts of any MOD, programming is what makes things different.
Fixes for some issues and other problems in the Source SDK
Need help trying to use a particular Source feature? Check here.
Technical aspects about the Source engine and Half-Life 2 programming.
What's this mean? What's that mean? Look here!