| Company Name | Software Titles |
|---|---|
| ACECAD | 2 |
| ACECO | 1 |
| Aceeca | 1 |
| Acelogix | 1 |
| Acelogix Software | 1 |
| Acer | 50 |
| Acer Crystal Eye Webcam | 1 |
| Acertant | 1 |
| AceSmileys | 1 |
| Acesoft | 1 |
| Acez Software | 10 |
| AcezSoft | 2 |
| ACG | 3 |
| acgme | 1 |
| ACI | 4 |
| ACI Services | 1 |
| Acksen | 2 |
| ACL | 2 |
| ACL Services | 2 |
| ACL Software | 2 |
| Acme | 3 |
| Acme Photo Software | 1 |
| ACNielsen | 3 |
| Acorn version Flying Meat | 1 |
| Acorro Group | 1 |
| Acoustica | 4 |
| ACP | 2 |
| ACPA | 1 |
| ACPPA | 1 |
| Acqualia Software | 1 |
| Acquire | 1 |
| Acresso | 13 |
| Acro Software | 5 |
| Acrobat.com | 2 |
| AcroChallenge | 1 |
| Acronis | 60 |
| Acroprint | 2 |
| ACS | 1 |
| ACS MIDAS+ | 2 |
| ACT | 3 |
| ACT Conferencing | 1 |
| Act-3D B.V. | 2 |
| Actelis Networks | 1 |
| Actify | 8 |
| Action Poker Gaming | 1 |
| Actiontec Electronics | 2 |
| ACTIV Software | 5 |
| Activcard | 2 |
| ActivCard S.A. | 2 |
| Active Data Recovery Software | 3 |