There are several. Some use discord, Line, WhatsApp. We use Telegram and run our club League tourneys. BestBall, Main chat, Turf Wars and inter club tourneys through the app. We have a monthly event calendar, Club news channel, Tips channel. We can set up team rooms, scorecard posting rooms etc.
We use our WGT names as our first names, our real first names as our last names and our WGT names again as our USER names, that way members can easily be added to different rooms we create. Communication can be instantaneous. Messages can be edited, forwarded, deleted etc as well as one on one messages if setting up BestBall matches or training new members. If they have set up their USER Name correctly, you can use the search box on telegram and type in @theirwgtname and can then contact them that way.
We have set up club vs club events with Classic Club, BananaSplits, NYCClub and SilverMine so far this year using the app. We can set up identical tourneys between clubs and post results (using excel spreadsheet). Can also use the app to set up H2H coordinated matches. We ask players NOT to use PuttPreview when playing as unfortunately WGT doesn’t have that option limited to practice rounds only. All players would have to have telegram downloaded if setting up H2H matches, otherwise if just using tourney format only 1 representative would have to have it to communicate with us.