From the website:

Blender is a free and open source 3D animation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation. Advanced users employ Blender’s API for Python scripting to customize the application and write specialized tools; often these are included in Blender’s future releases. Blender is well suited to individuals and small studios who benefit from its unified pipeline and responsive development process. Examples from many Blender-based projects are available in the showcase.

TurnTool is a suite of tools that enable 3D models to be created and viewed in a low-bandwidth environment. The suite consists of two components: a TurnToolBox plug-in for integration with 3D Studio Max, Autodesk Viz, Cinema4D and ArchiCAD that allows these software applications to export objects into the TurnTool format; and a TurnTable Viewer plug-in that is able to recreate the 3D model in a windowed environment or web browser.

Features:

3D modelling

ActiveX viewer

Low bandwidth use

A software tool for the creation of 3D interactive environments. It may be used to model and interact with physical objects that currently or have previously existed in the real world, or create virtual environments that have not previously encountered. VirTool player software is available for Microsoft Windows, Apple MacOS X, Nintendo Wii and Microsoft Xbox 360.

It now exists today more as a commercial tool for business to include 3D experiences in various aspects of their activities.

Autodesk 3ds Max (formerly 3D Studio MAX) is an open source graphics software tool used by video game developers, motion picture studios and architectural visualisers for modelling and animation projects. One of the most advanced 3D modelling tools in the industry, 3ds Max has been utilised by many CGI-animated films such as Avatar and 2012 to generate computer graphics alongside live acting.

Features:

Create parametric and organic objects with polygonal and freeform tools

Character Studio enables life-like virtual character animation

Scene Explorer provides hierarchical views of complex scene data and analysis

Wide range of creative textures, planar mapping and layering options

MAXScript built-in scripting language automates repetitive tasks and assists with new tool and interface development

Multiple user collaborations

Customisable and intutive user interface

A collection of free-to-download 3D models that have been designed using Google SketchUp.

Google SketchUp is easy-to-use free 3D modeling software.