title: Are there any browser-based version control clients?
body: <p>On a network I use I'm not able to install any third-party applications.  There's just MS Office plus a web-browser.</p>
  
  <p>But, I want to introduce some version control of the Excel spreadsheets I'm developing.</p>
  
  <p>As I said, I can't install any other apps, so an SVN/Git client is out of the question.</p>
  
  <p>Does anybody know of a VCS for which the client runs in a web-browser?  I need to add files, submit new versions, compare deltas, etc.  </p>
  
  <p>I'm not just looking for web-based read-only browsing of a repo - I need full functionality via the browser.</p>
  
  <p>I welcome your thoughts.</p>