We have debuggers for bash.
C++ exception (and generic) stack trace library (now libinstrument)
Project is migrating to libinstrument (https://sourceforge.net/projects/libinstrument/) Libcsdbg is a C++ exception stack tracer, offers the tools to create and process exception traces, the path an exception has propagated up the call stack, unwinding it, up to the point where it was handled. The traces are detailed with demangled function signatures and addr2line info (source file and line of each function call). Libcsdbg will perform flawlessly with multi-threaded programs, with dynamically linked shared objects (DSO) and with any statically linked library. Libcsdbg helps the developer/tester also create stack traces of any thread, at any point during, as a snapshot of the runtime call graph. This is very useful in cases of fatal errors, reception of terminating signals or process abortion/termination (such as segmentation faults)
goldenfiles is a project which has a number of small software ranging from useful to completely useless.
ACPI Module Tester is a small tool that can perform tests on the ACPI Extras Driver. It is a very easy way to report bugs.
The XPS is a scalable platform for meta-programming and domain engineering. It provides a virtual machine, compiler, and runtime library that make it possible to efficiently develop, debug, and run programs based on XPL (eXtensible Programming Language)