http://www.gamesonsmash.com/2013/02/...velopers-list/
Building the Future: PlayStation 4 Middleware Developers List

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The recently announced PlayStation 4 has specifications inspired by developers and will give gamers multiple ways to interact with each other and share their gameplay experiences. The following is a list from Sony Computer Entertainment Japan showing the middleware companies lending their technology to PlayStation 4 development.
Game Engines

• Bitsquid
• Blitz Games
• Crytek
• Epic Games
• Terathon LLC
• Vicious Engine

Physics/AI/Animation

• Babelflux
• Havok
• NaturalMotion
• Nvidia
• xaitment

Art/Graphics

• Allegorithmic
• Autodesk
• Confetti Effects
• Geomerics
• Matchlock
• OC3 Entertainment
• Rad Game Tools
• Silicon Studio Corporation
• Simul Software
• Speed Tree
• Umbra Software

Audio

• Audiokinetic
• CRI Middleware
• Firelight

Network

• Agora Games
• Jenkins Software

Other

• Deja Tools
• Xoreax