The difference between WebRTC and Softphone is that while both are used to facilitate voice and video communication over the Internet, they differ significantly in their implementation and usage. A Softphone is an application, typically software-based, that functions as a virtual phone, replicating the features of a traditional telephone on a digital platform using VoIP technology.
In contrast, WebRTC is a browser-based technology that enables real-time communication (RTC) directly from web browsers without requiring external applications or plugins.