NB: Development has been moved to Github:
https://github.com/avrdudes/avarice
AVaRICE is a program for interfacing the Atmel JTAG ICE to GDB to allow users to debug their embedded AVR target.
Interactive PHP shell Create an interactive environment to debug php line by line. It enables you to execute php code as if it were a commandline in a similar setting to bash and psh (perl shell).