title: What is a good alternative for SourceSafe on a USB Drive?
body: <p>I like to keep my source files on a USB drive for the portability. To date I have been using Visual SourceSafe for this purpose. What is a good alternative to VSS that fulfils these criteria:</p>
  <ul>
  <li>Entire database can be held on a USB &quot;pen&quot; drive</li>
  <li>Code / documentation duplicated on local drives</li>
  <li>Does not require a central server</li>
  <li>Easy to backup and restore using standard backup tools</li>
  <li>Integrates with Visual Studio</li>
  <li>Has a small footprint</li>
  <li>Easy to clean the database and keep small</li>
  <li>Compatible with Windows XP, Vista and Vista x64</li>
  </ul>
  <p>A good reference on setup would be good too.</p>