Blender - Blender is the open source, cross platform suite of tools for 3D creation.
DVDVideoSoft - Download and Convert YouTube videos with Free YouTube Download and Free YouTube to MP3 Converter in any format. Easy to use apps for PC and Mac.
K-3D - K-3D is free-as-in-freedom 3D modeling and animation software.
Photo! 3D Album - Photo!
Prezi - Welcome to Prezi, the presentation software that uses motion, zoom, and spatial relationships to bring your ideas to life and make you a great presenter.
3Dthis - A website for 3D object creating.