| ID | Name | Type |
|---|---|---|
| #4770 | Football Enterprises | Z |
| #4771 | Foraits Software | Z |
| #4772 | Force Astro | ? |
| #17284 | Fordwark | R |
| #22304 | Forense | P |
| #4773 | Forest Software | S |
| #19894 | Forlaget Audio A/S | B |
| #4774 | Format | Z |
| #4775 | Format Publications | Z |
| #4776 | Forrest M. Mims | ? |
| #4777 | Forthware | ? |
| #4778 | Forward Software | Z |
| #4779 | Fossage Software | Z |
| #4780 | Fouad Katan | ? |
| #4781 | Foulsham | ? |
| #4782 | Foundation Applied Computing | Z |
| #4783 | Fountain Computers Ltd | H |
| #4784 | Fountain Drinks | Z |
| #4785 | Fountain PD | Z |
| #4786 | Four Square Productions | Z |