AC3D is a popular 3D object/scene modeller available for Windows and Linux (previous versions for SGI, Solaris and HP also available). It's very easy to use but powerful too - anyone can create good looking 3d objects in minutes.
Whether you want to design 3d objects for games or build your dream home in virtual reality, AC3D is the ideal way to quickly turn your ideas into great three dimensional models.
It supports many file formats including POV-Ray, VRML (1 and 2), RenderMan ,3D Studio, Lightwave, DXF, Alias triangle, Wavefront OBJ, Direct X.
AC3D is used by thousands throughout the world. Even those who have access to much more expensive 3d graphics software have AC3D because it's fast and easy to use.
Features:
Easy to use intuitive interface.
Built-in fast OpenGL 3D renderer with adjustable field-of-view - instantly see results of your actions in 3D. Spin the model or switch into 'walk mode' for Quake-style control.
Edit at different granularity - groups, objects, surfaces, vertices
Create and edit multi-point polygons and lines - not just triangles.
Texture mapping support with real-time rendering.
Create extrusions and revolutions. Perform surface subdivision.
Render straight to Povray or other renderer.
This software is a commercial software. You will be able to download and test AC3D during a certain period of time, then, if it does what you need, you will have to acquire the full version from AC3D publisher. The AC3D 3.5 free trial version contains an installer and an uninstaller, and has a size of 1400 Kilobytes.
For additional information and support request, please contact directly AC3D publisher.

AC3D Screenshot