Optical Tone is contributing heavily to the open source ORTC Lib SDK real-time communications engine.

ORTC Lib is an open source initiative to bring the ORTC API to the mobile SDK (UWP, iOS, Android) environments. ORTC Lib is highly optimized for mobile and supports a powerful network discovery, audio and video engine.

The SDK is built entirely cross platform in C++ and exposed to the various platforms as native SDKs.