Backchannel Chat - Backchannel Chat is best in class discussion tool that is intended for teachers to streamline their class activities.
Crugo - Crugo is a simple group collaboration platform for your team
NowComment - NowComment is a complete suite of collaboration tools, streamlining group discussion, annotation, and curation of texts, images, and videos.
Ripcord - A desktop chat client for Discord and Slack
Eduflow - Digital learning that actually teaches students something
Weavy - The complete white-label framework for in-app team messaging and collaboration.