This page provides information on the various (and mostly higher end) 3D modelling tools I use, have used, or am learning. I have also included links links to the home page of the tools where available.
A free modelling, rendering, and animation package
I am still learning how to use this program. It has a much steeper learning curve than either Rhinoceros 3D or IronCAD. My goal is to use it for animation rather than for general modelling.
Another Blender related site is the Blender Model Repository.
A solid modeller
IronCAD is not a cheap package at close to five times the price of Rhinoceros 3D but it is a great package for industrial design and project collaboration. It has some very innovative features including the Tri-ball.
As of version 6, it supports direct importing of Rhinoceros 3D files. I currently use the 5.2 version of IronCAD.
A NURBS-based surface modeller
Unlike most modelling programs this one uses NURBS rather than meshes to represent surfaces and objects. This allows you to create smooth surfaces and objects at virtually any magnification factor.
I started using Rhinoceros 3D when it was available in beta form before it was released commercially. I currently use the 2.0 version of Rhinoceros 3D. It is an impressive package with an amazing (as in low) price considering what this program can do and how easy it is to use. You can download a demo version of Rhinoceros 3D if you want to try it for yourself.