For those Revit users that are also subscription customers, Autodesk has released several new tools that can be downloaded at the subscription site. The first of these tools is the Worksharing Monitor for the Revit 2008 product line. The tool can be downloaded after logging into the subscription site and then go down to "Product Information & Downloads" section. There is a link for "AEC Product Modules & Add-Ons". This link will bring you to the download page.
From the Revit Worksharing Monitor help file.
The Worksharing Monitor for Revit 2008 facilitates the use of Revit software in a worksharing environment, in which multiple people work on one project. For workshared projects, the Worksharing Monitor answers questions like the following:
Who is currently working on this project?
Is my local copy of the project up to date?
When will my Save to Central operation finish?
Has my request to borrow elements been granted?
Are any issues interfering with my work on a Revit project?
Note: The Worksharing Monitor is not useful for standalone Revit projects, which do not use worksharing to divide the work for a project among several people. The Worksharing Monitor works with all Revit products, including Revit Architecture, Revit MEP, and Revit Structure. If you are working on one or more workshared Revit projects, install the Worksharing Monitor on your computer. When you open a workshared project in the Revit software, also start the Worksharing Monitor. (Using the Worksharing Monitor with worksharing projects is not required, but it is strongly recommended.)
For information about setting up, using, and managing workshared projects, as well as terminology and concepts related to worksharing, see “Working in a Team” in the Revit help.