- ACTV
 - Develops and markets proprietary, interactive television and video technology, allowing the viewer to make instant changes to the programme he is viewing. - Alticast
- Offers software based on DVB-MHP. Products include content authoring tool, data broadcasting head-end systems, and set-top box middleware.
 Channelbay
- Interactive TV agency providing iTV strategy, creative and production servers for major brands, broadcasters, and public services.- Collideascope
- Focused on convergence and interactive television production.
- Concero
- Provider of systems integration consulting services for interactive television technologies.
- Definitive iTV
- Interactive television media research firm delivering research and media frameworks to producers of interactive services and enabling technologies.
- Digeo
- Enables cable operators to offer digital video recording, telephony, communication, music, games, and secure, wireless home networking services.
 DV4
- Provides interactive television production and application development services.- EnerNow
- Provider of engineering software and hardware design services for the interactive television industry. Formerly known as Inprimis.
- GoldPocket Interactive
- Provider of real-time, two-way interactive programming.
- httv
- Offers expertise in set-top box applications, service production, and return path functionalities.
- ICTV Inc.
- Offering two-way interactive entertainment and consumer services.
- Intertainer
- Feeds movies, music, television shows, videos, shopping, and advertising directly to the home through the personal computer or TV using either high-speed telephone or cable connections.
- IO Interactive Optimum
- Digital cable service from Cablevision that provides interactive television, digital music, and digital video.
- Koplar Interactive Systems International L.L.C.
- Provides InTOUCH TV, an interactive television service whose features include games shows and instant shopping.
- Liberate Technologies
- Provider of digital infrastructure software and services for cable, satellite, and telecommunications networks.
- MetaTV
- Provider of integrated TV portals and applications that enable content, community, and commerce.
- OpenTV
- Provides interactive television technology and content for the cable, satellite, and terrestrial broadband industries.
- Spyglass Integration
- Systems integrator that develops, test, and deploys iTV services ranging from videon-on-demand to interactive applications.
- The Kiss Principle
- Invents, designs, and develops Conversational Interfaces to enhance consumer use of television, the Internet, applications, and services.
- Twin Entertainment
- Delivers enhanced real-time competitive games and sport events via digital TV.
- Two Way TV
- Interactive television system developers and content producers.
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