You can check out Ninja UV. It's a mel script so its all your uv's are done inside maya. http://www.creativecrash.com/maya/marketplace/scripts-plugins/texturing/c/ninja-uv--2 also if you want tools for moldeling/lighting/fractureing.. you can check out Ninja Dojo.…
I'm mainly a Max guy, but have had to pick up Maya lately and I've found that this: http://www.castorlee.com/maya-tools/auto-uv-mapper plus this: http://www.creativecrash.com/maya/downloads/scripts-plugins/texturing/c/uvdeluxe cover pretty much all my UV needs.
maya bonus tools from autodesk has some nice UV tools for pelt mapping http://area.autodesk.com/bonus_tools than ontop of that i use UVDelux http://www.creativecrash.com/maya/downloads/scripts-plugins/texturing/c/uvdeluxe there are a few other usefull things in bonus tools too for modeling and animation.