detectrtc
A tiny JavaScript library that can be used to detect WebRTC features e.g. system having speakers, microphone or webcam, screen capturing is supported, number of audio/video devices etc.
msr
Cross-Browser recording of audio/video media streams; targets WebRTC/getUserMedia/WebAudio/etc.
multistreamsmixer
Pass multiple streams (e.g. screen+camera or multiple-cameras) and get single stream.
getstats
A tiny JavaScript library using WebRTC getStats API to return peer connection stats i.e. bandwidth usage, packets lost, local/remote ip addresses and ports, type of connection etc.