Public - Group chats.
Alcamy - Free, open self-learning platform. Learn & teach anything.
chitchat - Chat Room with Selfies and Pagers (yes, pagers!)
EduDo - EduDo is a video discussion platform
Vurb - A new way to find, plan, and do – all in one place
Lrnkey - Lrnkey.com is a global online marketplace that easily connects you to live instructors and tutors across the planet.