TRAX/C provides a set of sophisticated tools which enable the C programmer to interact with the executable program at the source code level, supporting all the usual debugger features, such as single stepping, but executed interactively via the source code statement.

The 'C' compiler for MPE from CCS Inc. has a number of unique features designed to let the programmer gain maximum utilisation of the HPPA RISC computing environment.
CCS/C-XL is from CCS, a Company who have produced more 'C' compilers for more HP computers than any other company (including HP).