MaxScript can be used to automate repetitive commands in 3D Studio MAX. It can also be used to program a variety of user specific plugins for 3D Studio MAX. An example: I wrote the RGB level control for Archvision trees because it would take me a week to change all the RGB values of the trees. Instead of a week it took me 4 hours to program the script and 1 hour to apply the script on the trees and changed the RGB values. So the time-profit was about 35 hours... O, and no RSI...

free MaxScripts
Camera Animator v2.0
Open Material libraries from Directory
Random material ID
Attach by Material
Object Cycler
Camera Animator v1.5
Random Replacer v3
Random Rotate
Random Material
Solar Time
Spline Align
Copy Properties