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VisLua is a full featured IDE for the Lua scripting language written in Lua. VisLua supports full context debugging, syntax highlighing, and many other advanced IDE features.
NJAMD (Not Just Another Malloc Debugger) protects against all common dynamic memory bugs, without even relinking your executable. It also provides stack trace information, and eventually will include a full GUI interface. NJAMD NEEDS YOUR HELP!
ANSIMD (Ansi Memory Debugger) is a compact, powerful and flexible debugging
facility, completely configurable at runtime, that detects automatically a
large class of problems related to memory management. It is portable and
requires low resources.
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xdProf is a tool that captures and analyzes stack traces sent at a fixed interval from Java Virtual Machines in a distributed system. The xdProf client uses a C/C++ Java Virtual Machine Profiling Interface (JVMPI) library and works on many platforms.
httptrace - TCP/HTTP trace utility (for Java or Win32/jview.exe)
Listens on a TCP/IP port, redirects data to another port and writes traces.
Several options (search for patterns, ...).
PHP Profiler is both a Zend extension and module capable of generating profiling information (function call statistics) for PHP applications on the server side. No PHP code has to be changed, although the profiler data is available to your scripts.
Clint is a testbed for static source-code checking techniques. It is currently designed to check C++ for common programmer errors and suggest improvements.
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Parallelized GDB: a tool for debugging parallel programs written in MPICH.
Written in C++ and on the brink (hopefully) of usability. Please help develop!
Moved to http://www.freesoftware.fsf.org/gmemlogger.
memory tracker that redefines some memory allocation functions like malloc or strdup (and glib functions too) to log where memory is used.
OpenTNF is a system-level tracing facility for capturing and presenting diagnostic information and performance metrics. Linux/Intel (kernel 2.2.x) is the initial target platform. The OpenTNF project is seeking developers for ports to other platforms.
A recreation of Microsoft's Visual Basic that runs and compiles for/in Linux. We've decided that VB4Linux will be programmed in C. We will probably be beginning sometime within the next week or so... Still looking for developers! Thx!
This is a very simple simulator for the Microchip PIC16C71. I've used it for various small projects. It has an option video display feature to simulate a software-generated video output, which I used to debug PIC-Pong.
The QPascal Project is an endeavour to produce a new generation of development tools based on the object-oriented programming language QPascal. Its goal is to create a compiler, linker, debugger, assembler, and eventually an extensive and extensible IDE.
A Java class library for logging, tracing, warnings, errors, asserts, etc with runtime configurable formatting and event filtering. This project is no longer maintained.
The Open Log Engine is a powerful tool for advanced logging in games or programs. It easily allows you to make logging outputs in your program and analyse them afterwards with the Open Log Viewer, which provides you a powerful filtering system.