Find yet another Tool

In class, we discussed the importance of using a tool to keep track of versions of SRSs, Designs, Schedules, etc. Your assignment is to browse the web and find a commercial or free tool that can do one or more of these tasks. If you want to present a tool that you use at work, that is fine too.

Prepare a short (5-10 minutes) presentation. What does it do? How much does it cost? What feature mentioned in class does it include? What other features does it have? etc.....