title: Bug Tracking for Windows and SVN
body: <p>I'm working as part of a volunatry team creating an open source product with a permissive license. We are currently using Visual SVN Server/TortoiseSVN for source control and TeamCity for our continuous integration builds.</p>
  
  <p>I would like to add a bug tracking component into the mix that will integrate into SVN. Ideally, I'd like to use FogBugz but we have no budget. So, I need an alternative. The requirements are:</p>
  
  <ul>
  <li>Must be free or have a free version supporting at least 20 developers (we're volunteers!)</li>
  <li>Must integrate with VisualSVN Server</li>
  <li>Must run on Windows</li>
  <li>I prefer Microsoft technology (ASP.Net over PHP; SQL Server over MySQL, etc) because we are a Microsoft shop, we have experience with those tools and already have them installed.</li>
  <li>Must be able to work with a geographically distributed team</li>
  <li>Must work with Express editions of Visual Studio (the developers don't all have the Pro version so we can't rely on Visual Studio add-ins).</li>
  </ul>
  
  <p>I'd like The Community's recommendations, please, for products that meet all of the above requirements.</p>
  
  <p>[Clarification: our license is very close (though not word-for-word) to the MIT license.]</p>