Mike Malinowski (softmonkey.org) presents some new tools (5 at the time of writing) on his website:
This allows the user to set a gradient background within the Softimage Viewport.
This plug-in allows the user to see a 'tic-tac-toe' grid over their camera.
This is a suite of tools aimed at making the enveloping process a bit easier.
A quick and convienent way to store and access selections.
The benefit of this plugin is that it allows you to create persitant pivots for scenarios where you will want to rotate an object around a static pivot in relation to itself.
Downloads for x32 & x64 and a slightly longer description can be found here