Based on the UDP protocol and Agora's self-developed audio codecs, the Agora Voice SDK provides reliable real-time audio services. For details, see Agora Voice Call and Interactive Live Streaming and Interactive Live Streaming Standard. Agora has released the Agora Web SDK 4.x, which is not backward compatible with the Web SDK 3.x and earlier versions. If you want to download the Web SDK 3.x, please refer to the 3.x Web SDK section below.

Allows you to make international high-quality calls.

To illustrate Agora Voice and RTM SDK experience and capability in social use cases.