| ID | Name | Type |
|---|---|---|
| #17279 | First Byte Computers | R |
| #17280 | First Byte Software | M |
| #4729 | First Class | Z |
| #4730 | First Star Software Inc | Z |
| #4731 | Fischer | ? |
| #4732 | Fischertechnics | ? |
| #4733 | Fishbone | - |
| #4734 | Fisher | ? |
| #4735 | Fisher Software | Z |
| #4736 | Fisher-Marriott Software | Z |
| #4737 | Fisher-Price Learning Software | Z |
| #4738 | Fishermans Software | Z |
| #4739 | Fisions PLC | Z |
| #19754 | Fito | - |
| #19755 | Fitosoft | P |
| #4740 | Fitzroy House | ? |
| #4741 | Five Ways Software Ltd | Z |
| #16016 | Five to Twelve | Z |
| #17281 | Fiversoft Software | S |
| #15835 | Flair Software | Z |