AddLive provides a simple and convenient way to integrate live video, voice and text chat into applications by supplementing the emerging open WebRTC standard. It allows developers to add high quality, low latency, video conferencing to an app where, instead of users calling each other, they connect to the same scope on a server.
Agora delivers easy to embed Real-Time Engagement APIs which includes all the development tools and cloud infrastructure needed for mobile, web, and desktop applications. Agora dedicated to extreme low latency, high availability real-time voice and video within and across boarders.
The OpenTok iOSSDK lets you use OpenTok-powered video sessions in apps you build for iPad, iPhone, and iPod touch devices. The best way to learn how to use the OpenTok iOSSDK is to follow the OpenTok Basic Video Chat tutorial: via its parent site.
QuickBlox is the calling and messaging developer toolkit for every platform. Quickblox can be hosted using AWS / GCP / Azure or other cloud-providers on today's global market. Quickblox supports on-premises installations with no connection to the outside networks as well.