Packages with the webrtc use flag

media-sound / pulseeffects : Limiter, compressor, reverberation, equalizer auto volume effects for Pulseaudio

  • Enable use of media-plugins/gst-plugins-webrtc for various voice-enhancement FX

net-libs / pjproject : Open source SIP, Media, and NAT Traversal Library

  • Enable WebRTC support

www-client / seamonkey : Seamonkey Web Browser

  • Enable WebRTC support. Disabled by default due to privacy concerns.