Wings 3D is an advanced subdivision modeler that is both powerful and easy to use.

It offers a wide range of modeling tools, a customizable interface, support for lights and materials, and a built-in AutoUV mapping facility.

Erlang
-Written in Erlang, an open source, functional programming language distributed by Ericsson.

Winged Edge Data Structure
-It gets its name from the Winged Edge Data Structure (WEDS). This is the data structure used to store the adjacency relationships between edges, faces, and vertices in a Wings model.

Open Source
-Wings 3D is open source and completely free for use in both personal and commercial projects.