etrace makes use of the -finstrument-functions feature from gcc to log all function calls and display them as a call tree during run-time. The call tree can also be logged to a file. This lets you follow a program's execution path path without using a debugger. etrace consists of 80 lines of Python and 100 lines of C code.
JTreeProfiler is a multithreaded Java Profiler with support for Linux, Solaris, and Win32. The result is displayed in a nice TreeMap viewer to locate your time-consuming functions. The results are stored in XML, so they can be formatted by any XML-Tool, like JavaTemplates. The complete methodtraces are recorded for further analysis.
TestTrack Pro is a powerful defect tracking/bug tracking application. The application's server component runs on Linux servers and can be accessed by both Web and Windows clients. A full-featured defect management solution, TestTrack Pro includes multiple security configurations, integrated email notification, email importation, XML support, and much more. It easily scales from a single user to hundreds.
YakTrack is a simple but reasonably effective issue-tracking system written in Python using the current XML libraries. It uses simple XML DTDs to define issue formats, and stores each issue as a separate XML file, making for a very simple database structure. A command-line interface is available which either generates a series of textual prompts or shells out to an external editor to edit or submit new issues, query the database, etc. An email gateway and a CGI interface are also available.