| ID | Name | Type |
|---|---|---|
| #18479 | AMIS | Z |
| #285 | AMK | ? |
| #286 | AMS | U |
| #18566 | AMS Soft | P |
| #287 | AMSOFT | ? |
| #288 | AMST | ? |
| #289 | AMZ | ? |
| #18567 | ANDISOFT | P |
| #17016 | AP Repairs | R |
| #22902 | AP&KT Software | P |
| #290 | AP's Adventures | Z |
| #19325 | AP-Soft | P |
| #291 | APA | ? |
| #292 | APG Software | Z |
| #16466 | APSIS | Z |
| #293 | APUS | ? |
| #16003 | ARC Education | P |
| #17017 | ARC Electronics | R |
| #295 | ARCsoft Publishers | Z |
| #296 | ARDENT Software | Z |