The emergence of click to call applications are now primarily due to WebRTC, which is the underlying protocol that modern browsers are using in order to establish RTC (Real Time Communication) connections. By leveraging WebRTC and various VOIP technologies, various software applications are capable of click to call functionality within a web browser.
Ways to use this Latest Technology
WebRTC (Web Real-Time Communication) is an API definition drafted by the World Wide Web Consortium (W3C) that supports browser-to-browser applications for voice calling, video chat, and P2P file sharing without the need of either internal or external plugins.