Companies
- Advanced Interface Designs
- Andy Eckhard
- Aries Associates
- B-C-L
- Bob Woish
- Dale Lipinski Software
- DO LOOPS Computer
- Ener-Z
- Eugene Bock, Associates
- F. A. Burr
- Forth Dimension
- Friendly Computer
- G. Russell Electronics
- GOTWALD
- ICS Computer Training
- J. Balogh
- Keith Electronics
- M. H. Marks Enterprises
- M. T. Ehasz
- N. J. Gipson
- Omni Technology
- Orion's Belt Enterprises
- R & R Electronics
- Richard Booth
- SUMWARE
- Support Systems One
- ZXAD Software Unlimited
Periodicals
User Groups
- Central Pennsylvania ZX Users Group
- Central Pennsylvania ZX/TS Users Group
- Harrisburg Area Timex Sinclair Users Group
- PACC Timex/Sinclair Special Interest Group
- Pittsburgh Area Computer Club (SIG: Sinclair)
- Timex Sinclair User Group-Philadelphia
- Westmoreland Community College Timex Sinclair Special Interest Group