This is an updated version of UnwrapTools 1.5 which was originally developed by Steve Johnson and Tweaked by Diego Garcia Huerta. Max 2010 has some cool new features for align and spacing in between edges in a single click. Code has been tweaked to bring bottom unwrap holder back to life in Max 2010.
Works with 3DS Max 2010, 2011.
UPDATED 8/23/2015 - Fixed an issue with the plugin not loading the new buttoms when attempting to edit a UVW Map on a PC using Windows 10.
The updated tool can be downloaded from HERE.