Messenger Video Calls - Facebook Messenger, now with HD video calls
Whereby (formerly appear.in) - Collaborate from anywhere - video meetings with no downloads
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Around.co - Around.co is an app that provides video calls to remote teams all around the world.
CallKite - Your website’s video call center in just one click.
Remote Meeting - Remote Meeting with Video, Voice, Chat and Screen Sharing