Mac Tech: Getting Results With Macsbug - Tips and tricks on how to make use of the Macs built in low-level debugger. - http://www.mactech.com/articles/mactech/Vol.07/07.09/MacsBugresults/index.html
The PandaWave - Home of BugLink, a bug tracking system for the Macintosh and Windows and YAAF, a freeware C++ cross-platform application framework. - http://www.pandawave.com/
TestTrack and SoloBug - Bug reporting and tracking solutions. Multiple features including bug reports via e-mail, e-mail notifications, handling duplicate bugs as single bug reports, automatically generating product release notes, and attaching files to bug reports. - http://www.seapine.com/products.html
Secrets of the Debug Meisters - A grab bag of tips and tricks for debugging Macintosh software with the MacsBug low-level debugger: where to get it, what books to read, and lots of helpful hints. - http://www.goingware.com/tips/macsbug.html
Macsbug - FTP download of the latest version of Macsbug, a low level debugger for Mac OS machines, including documentation for older versions. - ftp://ftp.apple.com/devworld/Tool_Chest/Testing_-_Debugging/Debuggers_-_dcmds/
Develop Articles on Testing and Debugging - Several good articles on Mac OS debugging, including "Macintosh Debugging: A Weird Journey into the Belly of the Beast", "Macintosh Debugging:The Belly of the Best Revisited", "Balance of Power: MacsBug for PowerPC", "Sl - http://developer.apple.com/dev/techsupport/develop/bysubject/testing_debugging.html
The Memory Mine - A stand-alone application for monitoring and stressing heaps in open applications, and helping to find problems such as memory leaks and heap corruption. - http://www.adianta.com/files/MMSummary.html
The Debugger - Low and high-level symbolic debugging of both 68K and PowerPC programs in a full multi-window Macintosh environment. - http://www.jasik.com/features.html
CoverTest - Application designed to help programmers and quality assurance testers determine which parts of a program have been executed. - http://www.jasik.com/CoverTest.html