Cray Message Passing Toolkit Release notes for MPI, PVM, and SHMEM implementations for Cray PVP systems. http://docs.cray.com/books/004-3689-001/html-004-3689-001/004-3689-001-toc.html
DAPPLE Data-Parallel Programming Library for Education is a parallel library for C++ that defines vector and matrix types. Software, reference manual, and sample code. http://www.cs.dartmouth.edu/ILI/dapple/
Fast Messages A messaging layer designed to allow small messages to be transmitted quickly. Documentation and software distribution. http://www-csag.ucsd.edu/projects/comm/fm.html
GAMMA Project A network device driver for Linux and message passing library. Benchmarks, papers, and source code. http://www.disi.unige.it/project/gamma/
Shmem Put/Get-FM An implementation of shmem. Documentation, papers, software distribution. http://www-csag.ucsd.edu/projects/comm/put-get.html