From Engineered Design Solutions:
CadTempo is an automated time keeping solution for CAD documents and users. CadTempo logs all users that access the CAD document and tracks the elapsed and actual edit time spent while also maintaining a history of when the file was opened and closed. One click time reporting for logged session times, tasks and activities.
What's new in this version:
Version 188.8.131.52 adds Task and Activity logging, along with one-click reporting.