VMF Exporter
The Wall Worm tools allows you to send your 3ds Max scene to Hammer and Source via a VMF Exporter.
Unknown Bitmap Filetypes Crash VMF Exporter
Do not use bitmap filetypes that Max doesn't know how to read.
Using unknown bitmap types on world geometry and displacements will crash the VMF Exporter. This currently happens if using VTFs in materials in 3ds Max 2013 since there is no VTF plugin yet.
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 WWMT Models to GoldSource
Information on requirements to export and compile WWMT Models from 3ds Max into Goldsource.
Models and QC
Information on exporting models and QC files.
Character Models
Articles related to making character models for the Source Game Engine.
Making Collision Models
Articles about making collision models.
Prop Libraries
Creating Prop Libraries for re-using assets in Wall Worm Projects.
Prop Data and Custom Gibs
Explanation of the Prop Data and Custom Gibs rollout in Wall Worm Model Tools.
Exporting Your Static Prop
Basic explanation on using WWMT to export your static prop into Source.