Libcwd is a full-featured and well-documented library that assists C++ developers with debugging their applications. It includes support for ostream-based debug output, custom debug channels and devices, memory allocation debugging, run-time sourcefile:linenumber information, and demangled type names of variables. It is thread-safe.
CMUCL is a free, high performance implementation of the Common Lisp programming language which runs on most major Unix platforms. It mainly conforms to the ANSI Common Lisp standard. CMUCL provides a sophisticated native code compiler; a powerful foreign function interface; an implementation of CLOS; the Common Lisp Object System; which includes multimethods and a metaobject protocol; a source-level debugger and code profiler; and an Emacs-like editor implemented in Common Lisp. CMUCL is maintained by a team of volunteers collaborating over the Internet, and is mostly in the public domain.
Code Medic provides access to the power of gdb with an intuitive front end. It currently supports opening multiple source windows at once, setting/clearing breakpoints while the program is running, watching variables change in the variable tree as you step through code (even with nested structs), text searching through source, and integration with Code Crusader to provide a rapid, efficient develop-debug cycle.
The debug memory allocation or dmalloc library is a drop-in replacement for the system's native memory management routines. It provides powerful debugging facilities which are configurable at runtime. These facilities include such things as memory-leak tracking, fence-post write detection, file/line number reporting, and general logging of statistics. The library has been run successfully on a wide variety of operating systems. It also provides support for the debugging of threaded programs.
The GRASP Project has created an algorithmic-level graphical representation for software called the Control Structure Diagram (CSD). The CSD was created to improve the comprehension efficiency of Ada source code and, as a result, improve software reliability and reduce software costs. Since its creation, the CSD has been expanded and adapted to include other languages. GRASP provides the capability to generate CSD's from Ada 95, C, C++, Java, and VHDL source code in both a reverse and forward engineering mode with a level of flexibility suitable for professional application. GRASP has been integrated with the GNU family of compilers for Ada (GNAT) and C (gcc), and Sun's javac compiler for Java. Use of GRASP is not restricted to these compilers, however. This has resulted in a comprehensive graphically-based development environment for these languages. The user may view, edit, print, and compile source code as CSDs with no discernible addition to storage or computational overhead.
JUnitX is a module on top of JUnit 3.2 by Kent Beck and Erich Gamma. It is a well-designed Java testing framework to write tests in the style of Extreme Programming. It allows you access to private and protected classes, methods, and fields in order to write improved and well-organized test cases. JUnit and an old version of JUnitX are also part of Together since version 5.5.