The GNU Development Environment (GNUDE) is a
complete suite of GNU C/C++, Fortran, Java cross
compilers, and the GDB simulator/debugger for
embedded microprocessor application development.
AVR Libc is a high quality C library for use with
GCC on Atmel AVR microcontrollers.
CORBA for Ruby.
A Perl base class that allows you attach event callbacks to an object.