The "Open On-Chip Debugger" provides JTAG/SWD access from GDB (or directly with TCL scripts) to processors with ARM and MIPS based cores.
See website for full list of supported targets.
ThinFlashDebug (TFD) is a simple and lightweight debug tool. It uses a LocalConnection to log messages from your Flash application to a standalone debug window. It uses only static functions and no includes are necessary.
Sock4Log is a simple java xml serwer. Sock4Log will listen for client connections on the specified port number. It is created for retrieving xml log data from Flash Swf aplications which are using XmlSocketConnection.
JTAGER is a simple embedded system debugger running under linux host, which can make us execute some simple debug operations to our target board by the JTAG emulators, such as programming the flash memory. We also have full project documentations.
Printr Debugger is an Actionscript implementation of the "print_r" function from PHP. It has a lot of options, the results are presented in the Output Window or in the Printr Debugger Flash Panel. It offers remote inspection too.
The GDB (GNU debugger) RSP (remote serial protocol) allows remote debugging of embedded software. This project offers source code of monitors so the developer only needs to burn flash EPROMs once, then use serial communication to download/debug.