I apologize for being...Microsofty...but I use (and am the author of) BugTracker.NET. It's a free and open source bug tracking app for ASP.NET. In style and philosophy, it's closest to FogBugz.
This weekend I just finished getting the git and mercurial integration working. My eyes hurt.
This weekend I just finished getting the git and mercurial integration working. My eyes hurt.
More info about BugTracker.NET at http://ifdefined.com/bugtrackernet.html.