BigBlueButton
BigBlueButton is a global video chat platform built as Free Software. It was developed in a school, not in a boardroom. Making it the only virtual classroom built from the ground up. BBB is available in 65 languages and teachers all over the world have contributed to its design. Along with a global network of developers and companies providing commercial support, BigBlueButton is continuously evolving to meet the new real-world needs of teachers everywhere.