Mesh Simplify is an editor window for Mesh Simplify, Multiplex and Smoothing. It has been created to do everything in the editor without needing any third party program.

You will not need any other software or assets to manipulate meshes!
Features:
•Unity 5 support
• Simplification support with targeting vertex count.
• Smoothing with two alternative algorithms.
• Multiplex polygon count with predefined levels.
•Saving as prefab , mesh or .obj support.

Click For Documentation
• Does not require unity pro.
• Requires License Per Seat