Silo is a focused and lightning-fast standalone 3D modeler. Its deep modeling and UV mapping toolset has made it a favorite of pros for making game assets, movie characters, and objects for 3D printing. It's a huge upgrade over the modeling tools of bloated all-in-one packages, and works hand-in-hand with industry standards like Maya, Blender, and ZBrush, and game engines like Unity and Unreal.
Whether you're making game assets, movie characters, or sculptures for 3D printing, Silo is ideal for modeling and UV mapping. Advanced context-sensitive tools reduce the number of keys required to work fast, and sticky keys let you hop into and out of tools on the fly. From Spin Edge to advanced mirroring to LSCM UV Unwrapping, Silo has the tools pros request most. All accessible via a 100% customizable mouse
Complete Feature List is available here
You can download a free trial (or update your existing v2.x copy of Silo) from http://nevercenter.com/silo