IllusionCatalyst

IllusionCatalyst was a free instrument set designed to improve artistic expression and increase productivity in Autodesk 3ds Max. It consisted of three independent scripts for specific tasks of the production pipeline. It is now retired because of issues risen in latest 3ds Max versions.
IllusionCatalyst Tools

Legacy standalone instruments.
IC.PolySplitRing Split edge rings with realtime preview.
IC.SizeInScreen Get and set a model screen appearance size in pixels.
IC.GeoEdgeLoop Refit closed edge chains to regular shaped polygons.
IC.FrameIt Help viewport navigation taking care of orientation and zoom factor according to geometry.
IC.ExtendSurface Extend an Editable Poly surface from its border with control of extension amount and slant.
MaxScript

Articles about MaxScript practical programming and production ready code snippets.
MaxScript Hungarian Notation
Practical Space Mapping for Interaction
Edit Poly Modifier Undocumented Methods
Geometrical Calculations Functions Library
Data Handling Structures
Tracker and Painter Structures
System Structures
Editable Poly data from underlying Mesh
Editable Poly Sub Objects Selection and Conversion
Get Editable Poly/Mesh Front Faces
Events Callback Detection
Pivot Tools Customization Macros