| ID | Name | Type |
|---|---|---|
| #16516 | Ast A. Moore | + |
| #19026 | AsteroideZX | - |
| #1350 | Astonishing Animations | Z |
| #1351 | Astor Software | Z |
| #1352 | Astra Software | Z |
| #1353 | Astracom | ? |
| #1355 | Astral Software | Z |
| #1356 | Astral Software Ltd | Z |
| #1357 | Astro Programmes | Z |
| #1358 | Astro Software | Z |
| #1359 | Astro-Service Maitenbeth | Z |
| #1360 | Astrobyte Computer Games | Z |
| #1361 | Astrocalc | P |
| #20866 | Astronix | - |
| #1362 | Astros Productions | Z |
| #1363 | Astrosoft Games | P |
| #1364 | Asturias | ? |
| #16465 | Asylum Games | Z |
| #18949 | AtFruitBat | - |
| #1365 | Atari Games Ltd | Z |