Elluminate

A synchronous virtual classroom engine acquired by Blackboard to provide low-bandwidth VoIP and interactive whiteboarding for global education.

Elluminate Live! defined the early 2000s synchronous learning space before its 2010 acquisition by Blackboard for 116 million dollars. The platform optimized data transfer to ensure smooth audio and multi-user whiteboarding even on dial-up speeds. Major institutions (such as the Florida Virtual School) relied on its breakout rooms and session recording capabilities to manage thousands of remote students. While the original brand is now part of Blackboard Collaborate, its architectural focus on real-time pedagogical tools: polling, hand-raising, and desktop sharing: remains the industry benchmark.

https://www.blackboard.com/teaching-learning/collaboration-web-conferencing/blackboard-collaborate