Discussion on:

Three free bug-tracking tools

Here's another project which bears mentioning, which I've been following since its inception.

http://dcl.sourceforge.net

From the page:
"Double Choco Latte is a package that provides basic project management capabilities, time tracking on tasks, call tracking, email notifications, online documents, statistical reports, a report engine, and more features are either working or being developed/planned. It is licensed under the GPL (GNU Public License), which means it is free to study, distribute, modify, and use. "

DCL works on PHP3 or PHP4, can connect to MySQL, Postgres, Oracle, MSSQL, or Sybase ASE on the backend, and has been tested with IIS and Apache servers.

If you wish to review another free bug tracking system, check out BugHost - Active-X.COM's solution for a hosted team-based bug tracking. Active-X.COM has been established for over six years and BugHost has been operational for almost two years.Web-based systems allow entire development teams to collaborate and exchange information without installing any software on their own machines. BugHost provides a central repository for developers on the go or remotely stationed.

Visit http://www.BugHost.com for more information.

Check out Scarab at http://scarab.tigris.org. We've been using this product in house for a couple of months now and we are very impressed with its capabilities.

Another one worth looking at is BugTracker.NET (I'm the author). Especially for folks who are more comfortable with Microsoft tools. It's sort of a like a poor-man's FogBugz.
More info at:
http://ifdefined.com/www/bugtrackernet.html

For anyone out there in doubt of the value of a dedicated bug tracking system, why not just try it out with a leightweight solution such as 16bugs.com or BugWiki.com? Both allows you to get started in seconds with no installation, configuration or learning to do.

I'm using XStudio (http://www.xqual.com). We started to use this just as a test management tool (this is its main goal) and it turned out that it's very good to have the bugs managed into one single framework.

Some people in the QA team use it only as a bug-tracking tool.

It's free and we are quite happy about it so far...
JohnG

Forget all these complicated solutions... Just use http://holybugs.com

It's pretty useful for small projects that don't need complicated bug tracking systems...

Another windows based Bug Tracking tool that is suitable for small to medium sized companies is Vantive. Vantive is distributed as a freeware with absolutely no catches. It has an awesome interface with many features that are sure to please most Application Testers happy and Project management. Download it today from http://softkrafts.com/download

Check out http://www.thekillingjar.com. We created it after trying a few of the products you listed. They had way too many features and were way to confusing for our non-tech staff. So we ended up building our own system.

It is dead simple to use and has been well received by our clients.

We used to use Github and Bugzilla but eventually bit the bullet switched to Assembla (http://www.assembla.com). We found their bug tracking tool was best for us and it turned out to be a lot cheaper than we imagined.