Zen UV 2.2.4 Blender http://blendermarket.com/products/zen-uv Zen UV is not just a set of tools, it...
Main Features
Smart Zen Unwrap Operator to mark selected edges/faces as Seams and/or Sharp edges and Unwrap by Marked edges after. Unwrap your model easily with Zen Unwrap!
Powerful Marking System that helps you to mark Seams and/or Sharp automatically by angle, by existing UV Borders/Sharp Edges, and manually.
Finished System. It helps...