XL2CAD 5.0 for Revit

Name: XL2CAD 5.0
Author: Dotsoft
Compatibility: Revit 2009 (through API)
Cost: $60
URL: http://www.dotsoft.com/revit/xl2cad.htm
Description: Import Excel Sheets into Revit

RevitTV.com Drawing Manager

Name: RevitTV.com Drawing Manager
Author: Revit®TV.com
Compatibility: Revit 2010
Cost: $195
URL: http://www.revittv.com/
Description: Manage Sheets and Revisions

ideate explorer

Name: ideate explorer
Author: Ideate Inc.
Compatibility: Revit 2009
Cost: $145
URL: http://www.ideateexplorer.com/
Description: intuitive and profound way to search, quantify and select elements in a Revit model.

Revit Plugin for IES Virtual Environment

Name: Revit Plugin for IES Virtual Environment
Author: Integrated Environmental Solutions (IES) Ltd
Compatibility: Revit 2008, Revit 2009
Cost: FREE
URL: http://www.iesve.com/CONTENT/default.asp?page=s110
Description: Adds a Toolbar for IES Product line interaction

Toolbox4Revit

Name: Toolbox4Revit
Author: Jochen Reichert
Compatibility: Revit 2008, Revit 2009 64-bit
Cost: WallFilter FREE, FilterTool 39Euro
URL: http://toolbox4revit.com/
Description: Filter selection by family AND family type.

Revit Tool Manager

Name: Revit Tool Manager
Author: Jimmie Fulton (Gensler)
Compatibility: All Revit Versions
Cost: FREE
URL: http://blog.illumid.com/2007/12/revit-tool-manager.html
Description: a GUI for editing the External Commands and External Applications within the Revit.INI file.

NOTE: There is a similar tool (Add-in Manager) bundled in the SDK DVD that was shipped to you.

STL Exporter

Name: STL Exporter
Author: Autodesk
Compatibility: Revit 2009 64-bit (Architecture, Structure, MEP)
Cost: FREE
URL: http://labs.autodesk.com/utilities/revit_stl/
Description: designed to take a 3D Revit building information model and create an STL file that can be used for 3D Printing