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| AppleFeetGaming | Developer | |
| AppleFruitGames | Developer | |
| AppleJacks | Developer | |
| ApplePieDev | Developer | |
| ApplecsoftGames | Developer | |
| Appleguysnake | Developer | |
| Appleman95 | Developer | |
| Applemunch Games | Developer | |
| ApplesToPears | Developer | |
| Application Systems | Publisher | |
| Application Systems Heidelberg | Developer | |
| Applied Computer Concepts | Publisher | |
| Applied Computing Services | Developer | |
| Applimazing | DeveloperPublisher | |
| Appnormals Team | Developer | |
| Appox | Developer | |
| AppsGears.com | Developer | |
| AppyArt | Developer | |
| Apricot | DeveloperPublisher | |
| ApricotWTF | Developer | |
| April Whitehead | Developer | |
| AprilB | Developer | |
| Aprinet | Developer | |
| Aprize Inc. | Developer | |
| Aprkot | Developer | |
| Apropos | Developer | |
| Apros | DeveloperPublisher | |
| Aps1s | Developer | |
| Apseren Industries | Developer | |
| Apt Games | DeveloperPublisher | |
| Apurv Verma | Developer | |
| Apus Software | DeveloperPublisher | |
| Aqarius | Developer | |
| Aqua Pacific | Developer | |
| Aqua Pacific Ltd. | Developer | |
| Aqua Plus | DeveloperPublisher | |
| Aqua Rouge | DeveloperPublisher | |
| Aqua Style | Developer | |
| Aqua Systems | DeveloperPublisher | |
| Aqua SystemsJP | Publisher | |
| AquaCentauri | Developer | |
| AquaDoesStuff | Developer | |
| AquaNoixl | Developer | |
| AquaPunk Projects | Developer | |
| Aqualuft Games | Developer | |
| Aquaplus | DeveloperPublisher | |
| Aquaria | Developer | |
| AquariusBat | Developer | |
| Aquasystem | DeveloperPublisher | |