MATLAB by MathWorks is an interesting piece of (commercial) software that is used all around the world in engineering and research.
I have played with MATLAB in several ways along the time:
Utilities
- Python parser of Simulink mdl files (for dependency extraction)
- FileExchange contributions
Interfacing
- C++ interface that is not linked against libeng
- Python interface (using ctypes and not C module)
- .NET (article on CodeProject)
- XVR MATLAB/Simulink using libeng and with IPC
Simulink
- Real-Time hacking (2003)
- S-Function for accessing Database (part of SKILLS DataKit)
Teaching
- Course on Simulink as SSSA