We have debuggers for bash.
ccdebug is a Qt-based graphical gdb debugger frontend. It uses the gdb/mi "machine interface", and consists of the main program and a generic gdb/mi-plugin "migdbplugin.so" communicating with gdb.
Prolint is a tool for automated source code review of Progress 4GL code. Prolint can enforce company coding standards and finds sloppy code and code that may perform differently than how the programmer intended.
LLVM is a unique compiler infrastructure designed for the optimization of programs from arbitrary programming languages. Compilation in C and C++ programs is supported using a parser based on GCC 3.4. Backends exist for X86, Sparc, PowerPC and "C".