| ID | Name | Type |
|---|---|---|
| #17021 | Abackus Electronic Supplies | H |
| #324 | Abacus Electronics | Z |
| #325 | Abacus Programs | P |
| #326 | Abacus Software [1] | Z |
| #327 | Abacus Software [2] | Z |
| #328 | Abbex Electronics Ltd | P |
| #329 | Abbeydale Designers Ltd | Z |
| #330 | Abdul | ? |
| #331 | Abdul Hafiz Ibrahim | + |
| #21083 | Abel Antunes | + |
| #21262 | Abel Ruiz Lopez | + |
| #17022 | AberData | A |
| #332 | Abersoft | Z |
| #333 | Abracadabra | ? |
| #335 | Abrasco | P |
| #16536 | Abrimaal | + |
| #336 | Absent | ? |
| #18144 | Absinthe Boy | - |
| #337 | Abstract Concepts | Z |
| #338 | Academic Service | Z |