Tools

The ANTS Load Balancing System - Source code and documentation.
http://unthought.net/antsd/

MOSIX - A kernel module to support clustered computing by migrating processes across a cluster. Source code, papers, mailing list, and bug archive.
http://www.mosix.cs.huji.ac.il/

ClusterIt - Suite of tools for managing large clusters of machines including a variety of administration programs such as parallel rcp, parallel rsh, job scheduling, and simple barrier sync.
http://www.garbled.net/clusterit.html

CODE Visual Parallel Programming System - CODE is a visual parallel programming system that composes sequential programs into parallel programs for shared-memory multiprocessors and workstations running MPI or PVM.
http://www.cs.utexas.edu/users/code/

ARCH - A C++-based object-oriented library of tools for parallel programming using MPI. Source code and documentation.
ftp://ftp.tc.cornell.edu/pub/ARCH/ARCH.v.2/

The Globus Toolkit - The Globus Toolkit provides software tools that make it easier to build computational grids and grid-based applications.
http://www.globus.org/toolkit/

Pooch - Graphical software for distributing jobs to a network of Macintoshes.
http://daugerresearch.com/pooch/

Etnus, Inc. - Debugger and performance analysis tools for parallel programs. Product information and manuals.
http://www.etnus.com/

Scientific Computing Associates - Sells virtual shared memory computing tools and clustering software.
http://www.lindaspaces.com/