FriendCaller /ˈfreɪndkaʊəlr/ is a Video and Voice over Internet protocol developed by C2Call GmbH based in Werl, Germany. Its proprietary Voice-Over-Internet technology was originally created by Michael Knecht and Martin Feuerhahn. It was a first prototype developed by Actai Networks GmbH in 2007; the technology was then transferred to C2Call GmbH in 2008. Later on, FriendCaller was launched in 2009 as a website and as an iOS (iPhone, iPad, iPod touch) app. FriendCaller establishes peer-to-peer connectivity and allow users to communicate one-to-one or in groups via Video Chat, Voice over IP, Instant messaging, Texts/SMS, and phone calls.