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Super Dimensional Fortress

Super Dimensional Fortress (SDF) is one of the oldest public access UNIX systems on the Internet.

It has been operational in some shape since the year 1987. It is operated as a non-profit organization by Stephen Jones[?]. Basic membership is free after validation, more sophisticated supplemental membership levels are available after donations.

External links

To join, telnet://sdf.lonestar.org.
The website of SDF is at http://sdf.lonestar.org
SDF at Gopher gopher://sdf.lonestar.org

All Wikipedia text is available under the terms of the GNU Free Documentation License

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