WebRTC is a relatively new technology, so there are not many direct competitors. However, there are other technologies that provide similar capabilities for real-time communication over the web.

One of the main competitors to WebRTC is Skype, which is a popular platform for audio and video calls, as well as messaging and file sharing. Skype uses proprietary technology and requires users to install a separate app in order to use its features.

Another technology that provides similar capabilities to WebRTC is Zoom, which is a popular platform for video conferencing and online meetings. Zoom allows users to connect with each other and share audio, video, and screens without the need for additional software.

In addition to these proprietary platforms, there are also open-source technologies that provide similar capabilities to WebRTC. For example, the Jitsi project is an open-source platform that allows users to conduct audio and video calls, as well as share screens and files.

Overall, while there are not many direct competitors to WebRTC, there are other technologies that provide similar capabilities for real-time communication over the web. These include proprietary platforms like Skype and Zoom, as well as open-source technologies like Jitsi.