SuperParallel.com (Popularity: ): Information on supercomputers, parallel computing, multiprocessing, software tools, and the common terminology of supercomputing.
Flash Mob Computing (Popularity: ): Organization that hosts gathering to create ad-hoc temporary assemblies of ordinary PC's running special software to coordinate the PC's into one single supercomputer.
Beowulf Underground (Popularity: ): Archive of the news sources dedicated to the beowulf community.
Beowulf (Popularity: ): Opensource parallel computing from NASA. Site includes an overview of the Beowulf Project, as well as archive, showcase, community, and tools.
Parallel Tools Consortium (Popularity: ): Collaboration of researchers, developers, and users working to make parallel tools responsive to user needs.
Ohio Supercomputer Center (Popularity: ): Supercomputer center based in Columbus sponsored by the State of Ohio. Offers programming workshops, focus groups, and consulting services.