Historical
- 42
- Matthew Reed's TRS-80.org
- Enthusiast site covering TRS-80 history, computers, software, hardware, books, magazines, and games.
- 43
- Official TRS-80 Dutch Usergroup
- Usergroup offering a DSDD Newdos/80 emulator for the Model I and PC<>TRS-80 transfer software and information on hardware projects.
- 44
- System 80 Support Site
- Dedicated to the System 80, a TRS-80 Model 1 clone, popular in Australia and New Zealand in the early 1980's and a TRS-80 model 1 (near-)clone.
- 46
- Tvdog's Archive
- Programs and documentation for the Tandy 1000-series computers, and DOS Internet programs.
- 47
- UNIVAC Memories
- An ever growing collection of memorabilia, contemporary documents, and anecdotes recounting the history of UNIVAC 1100 series mainframes.
- 51
- Pdp11.org
- Dedicated to preserving the history and legacy of the PDP-11 series of 16-bit minicomputers.