The system GRAS with interfaces for the programming languages Modula-2 and C is available as public domain software for Sun3/Sun4 workstations (the GRAS system itself is implemented in Modula-2 and consists of many layers which might be reusable for the implementation of other systems):
There are several files contain documentation, sources, binaries, and libraries. All binaries are for Sun/4 machines. Sun/3 binaries are shipped only if explicitly requested.
Lehrstuhl f\"ur Informatik III University of Technology Aachen (RWTH Aachen), Ahornstr. 55, D-5100 Aachen Contact : Dr. Andy Sch"urr (or Richard Breuer), andy@rwthi3.informatik.rwth-aachen.de ricki@rwthi3.informatik.rwth-aachen.de (for technical support)ftp from tupac-amaru.informatik.rwth-aachen.de (137.226.112.31) in /pub/unix/GRAS522_3