Active Matrix Rooms | Find Matrix Rooms That Are Active
activematrixrooms.com
Find Matrix rooms that are active. Matrix room search list finder. Discover the most active Matrix rooms and spaces, sorted by real-time message velocity and topic. Updated live.

Source code is here https://gitlab.com/masland.tech/matrix-activity-tracker

If you have any questions please feel free to ask. This is a project I have been working on for about 5 months over time. With suggestions from a few matrix community members it has reached this point.