To quote the SDF FAQ
The Super Dimension Fortress is a networked community of free software authors, teachers, students, researchers, hobbyists, enthusiasts and the blind. It is operated as a federally recognized non-profit 501(c)7 and is supported by its members.Their mission is to provide remotely accessible computing facilities for the advancement of public education, cultural enrichment, scientific research, and recreation. Members can interact electronically with one another regardless of their location using passive or interactive forums.
To learn more about SDF, its history, and its mission, you can read
Unlike American Public Broadcasting, The Mozilla Foundation, and other popular non-profits, there are currently no large corporate sponsors of SDF. This means that it depends entirely on support from individuals like you.
SDF's 501(c)7 status means that donations to it are not tax-deductible.
1 Type 'arpa', or 'meta', at the SDF shell ('arpa', or 'meta') for details.
SDF Public Access UNIX PO BOX 17355 SEATTLE WA 98127 USA