https://www.newtek.com/

NewTek, Inc. is a San Antonio, Texas–based hardware and software company that produces live and post-production video tools and visual imaging software for personal computers.
Software-driven IP Systems, modular video production with virtually limitless access to video sources and video mixing options.
Revolutionary solutions as the Tricaster, the most complete multi-camera video production system on the planet. Everything you need to create, stream, broadcast and publish professional video programs in one turnkey system.
Communication systems as TalkShow, a professional solution to reach millions of monthly connected Skype users worldwide, add them to guest rosters, and maintain complete confidence in video and audio quality. 
NewTek systems are used worldwide by broadcasters, sports leagues and teams, educators, houses of worship, live event producers, E-sport leagues, web-based talk shows, and more than 80% of the U.S. Fortune 100.