- Absolute Quality, Inc.
 - Game testing company. - Alienbrain
- Asset management and source control system for professional media and entertainment projects, which allows users to version, share, and manage files.
- Amic Games
- Romanian development company of games including GreenFace.
 Atomic Planet Entertainment
- Video game development studio.- Avalanche Software
- Offers existing and original game development or enhancement.
- BioWare Corp.
- Develops of videogames and creates animation for television and film.
- Blitz Basic
- Programming language designed for the sole purpose of writing videogames.
- Butterfly.net
- Production studio, online publisher, and technology provider for persistent-state and session-based Massively Multiplayer Games (MMGs).
- Darwin 3D
- Interactive, 3D design and production for gaming and entertainment.
- Electric Prism
- Specialises in interactive game design.
- Green Dragon Creations
- Ports PC games to the Mac platform.
- Interactive Selection
- Video game recruiter in the USA, U.K., and Australia.
- Liquid Development
- Manages teams of artists to create great game art and content including 3D models and animation.
- Loki Entertainment Software
- Ports PC games to the Linux OS.
- TransGaming Technologies
- Allows game developers to build games for a single system, then redeploy them for other platforms, such as Linux.
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