ClickMeeting - Collaborate with partners and clients using ClickMeeting professional web conferencing software. Try it now, FREE!
Whereby (formerly appear.in) - Collaborate from anywhere - video meetings with no downloads
Zoho Cliq - Team chat that's built for work
Remote Meeting - Remote Meeting with Video, Voice, Chat and Screen Sharing
GoToWebinar - Webinar & Online Conference | GoToWebinar
Around.co - Around.co is an app that provides video calls to remote teams all around the world.