Revit Build Checker

Name: Beside the Cursor Revit Build Checker
Author: Richard Binning
Compatibility: ALL Revit
Cost: FREE
URL: http://www.integr-8.com/besidethecursor/2009/02/revit-2010-build-checker-updated.html
Description: Reports installed Revit Builds

3D Visualization Applications

Name: ICEvision
Author: ICEedge
Compatibility: Revit 2009 (through API)
Cost: $77/month
URL: http://www.ice-edge.com/iceVision.php
Description: Through patented use of 3D video game technology, you're free to explore your model in a natural manner, simply by walking into your design and taking a look around.

Name: VEO-LUX
Author: M-SIX
Compatibility: Revit 2009
Cost: $
URL: http://www.m-six.com/products/VEO-LUX.aspx
Description: Enhanced 3D Visualization Tools

Clash Detection Applications

Name: Solibri Model Checker
Author: Solibri Inc.
Compatibility: Revit 2009
Cost: $
URL: http://www.solibri.com/solibri-model-checker.html
Description: Clash detection and other tools.

Name: Navisworks
Author: Autodesk Inc.
Compatibility: Revit 2009
Cost: $
URL: http://navisworks.com/
Description: Clash detection and other tools.