FastComments

Live comments on course pages. Users can @mention each other and get notified based on their notification preferences. Click the bell to subscribe to all new comments on a course.

The rich text editor supports links, images, GIFs, and more. All of these can be configured or disabled.

With collab chat enabled, users can select pieces of content and discuss it. Highlighted text is anchored in place so the conversation stays tied to the content.