BugTracker.NET related links:
Bug Shooting a screenshot utility that works great with BugTracker.NET. It has more features than the one I wrote, but it's not free.
CKEditor (formerly FCKEditor) is the free, open-source rich-text editor embedded in BugTracker.NET.
Inedo BuildMaster is a tool for continuous integration and build/deployment/release automation and management that integrates with BugTracker.NET.
Lucene.NET is the free, open-source full-text search engine embedded in BugTracker.NET.
Mercurial is a free open source version control system that works great with BugTracker.NET
Not really related, but the website I usually go to when I have programming questions.
Subversion is a free open source version control system that works great with BugTracker.NET.
TestRail is comprehensive web-based test case management software that can be that supports test management integration with BugTracker.NET.
Testuff is an on-demand service for managing and executing manual software tests and for reporting defects that integrates with BugTracker.NET
Windows Developer Power Tools
From O'Reilly, an encyclopedic guide to more than 170 free and open source programming tools, with a chapter on BugTracker.NET
Catching unhandled exceptions and sending them to BugTracker.NET
A how-to article with code by Malisa Ncube