FastComments

Add live comments and inline discussions in Moodle.
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.
Potential privacy issues
FastComments is privacy focused, and we do not sell any user data. We also have an option for users to create their accounts in our EU-specific data center.
Learn more at https://fastcomments.com/privacy-policy