Mass Model Fetch
The Mass Model Fetch Utility allows you to import multiple props into your scene at once.
MDL File Loader
Geometry Plugin to load Valve's MDL files directly into 3ds Max.
Attachments & Particle System UI
Attachments are points on your model where you can attach extra models and particle systems (guns, sprites, etc). This page details both Attachments and Particle Systems since the Particle System controls are also in the attachment rollout.
Hitboxes and Bone Properties
The bone tools allow you to give specific bones artbitrary surface properties, set mass bias and create hitboxes and hitbox groups.
MAP and RMF Importer
3ds Max RMF and MAP file format importer.
A Source for New Tools
2016 Year in Review for Wall Worm
Halloween 2016 news for Wall Worm and the release of a new MDL Importer for 3ds Max.
Washed Out Textures
Instructions of getting your materials to import without being washed out in color.