| Company Name | Software Titles |
|---|---|
| Accomplice | 1 |
| Acclaim Games | 2 |
| Acclaim | 2 |
| Accessory | 1 |
| AccessData | 17 |
| AccessAgility | 1 |
| Access-Berater | 1 |
| Access Recovery | 1 |
| Access | 1 |
| AccentSoft Team | 3 |
| Accent Solutions | 1 |
| Accelrys | 19 |
| Accellion Pte | 1 |
| Accellion | 1 |
| Accela | 4 |
| ACASystems.com | 1 |
| ACASystems | 1 |
| ACARD Technology | 1 |
| Acapela Group | 1 |
| Academy | 2 |
| ac3filter | 1 |
| AC-U-KWIK | 1 |
| AC Software | 1 |
| AbyssMedia.com | 3 |
| Abto | 1 |
| abstracture IT-Beratung GmbH | 1 |
| absolutist.com | 1 |
| Absolutist | 3 |
| AbsoluteWay | 1 |
| Absolute Software | 5 |
| ABS Nautical Systems | 2 |
| ABS | 3 |
| Abrosoft | 1 |
| Abra Software | 1 |
| ABR | 1 |
| Above Software | 1 |
| About280.com | 1 |
| About Documentation | 1 |
| about | 1 |
| ABNT | 1 |
| ABNAMRO | 2 |
| ABN-AMRO | 1 |
| ABM | 1 |
| Ableton | 1 |
| AbleSys | 1 |
| AbleOwl | 1 |
| AbleCommerce | 1 |
| Able Apples | 1 |
| AbiWord | 1 |
| AbiSource Developers | 1 |