Sky Writer
Sky writer allows you to render your 3ds Max scene straight into the Source Game Engine as a HDR 2D sky texture (also known as a cubemap).
Displacements
An overview of creating displacements for the Source Game Engine inside 3ds Max using Anvil.
Starter Kits
Source Engine level design starter kits will automate some entity setups for common level design tasks.
On the Grid
Information and videos on using the grid in 3ds Max for Source Engine Level Design.
SMD, VTA and QC Importer
Information on importing SMD files and QC files from Source into 3ds Max.
Detailer
Bringing life to your scenes
Detailer is a detail sprite primitive plugin with exporters. The tools allow you to either create VBSP files, and will also create geometry that exports into the Source Game Engine with the Wall Worm VMF exporter.
Exporting CAT and Biped Models
Export your CAT or Biped rig from 3ds Max into the Source Game Engine with Wall Worm.
WWMT Changelog
Wall Worm tools changelog. Includes information and release date on each update to Wall Worm.
Advanced Texture Controls
With Wall Worm Pro, you can export arbitrary texture maps as VTF files in Source.
Animated Textures
Instructions on creating an animated texture in 3ds Max and exporting to Source.