OpenTok
OpenTok is a cloud-based platform developed by Vonage (formerly TokBox) that provides APIs and SDKs for embedding real-time video, voice, and messaging capabilities into web and mobile applications. It handles the complex infrastructure of WebRTC-based communication, including signaling, media routing, and session management. Developers use it to build features like video conferencing, live streaming, and interactive broadcasting.
Developers should learn OpenTok when building applications that require reliable, scalable real-time communication, such as telehealth platforms, online education tools, or customer support chat with video. It's particularly useful because it abstracts the complexities of WebRTC, offers built-in features like archiving and moderation, and supports cross-platform development for web, iOS, and Android.