Welcome to F-Droid's Matrix Homeserver.
Here, F-Droid's contributor chats get hosted which are accessible via the Matrix protocol. You can use clients like Riot to access those chats on nearly all platforms. For a full list of Matrix clients, see this page. Once you got a Matrix client installed, go to #fdroid:f-droid.org to join the discussion!
To quickly come aboard, you can use the canonical instance of Riot Web.