Arch Primitive
The Arch Primitive is a scripted geometry plugin for 3ds Max that creates arches for world geometry in BSP games such as those made on the Source Engine
Porting Levels into Source
General Overview of Converting Scenes that Were Not Designed with Source in Mind
Overview on porting scenes and levels from other sources.
Archive of Wall Worm Version 1 Changelog
Archive of Changelog 2011-2014
Archive of Wall Worm Version 1.X changelog in 2011 through 2014.
Archive of Wall Worm Version 2 Changelog
Archive of Changelog 2014 to early 2017
Archive of Wall Worm Version 2.X changelog in 2014 through early 2017.
Export Textures
How to export your model textures from 3ds Max to Source.
VMAP Exporter
The Wall Worm Level Exporter can export 3ds Max scenes into Source 2 VMAP files.
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.
WWMT Changelog
Wall Worm tools changelog. Includes information and release date on each update to Wall Worm.
Starter Kits
Source Engine level design starter kits will automate some entity setups for common level design tasks.