I set up a last minute booth for the Linux Club (I'm the new club president) at my school made from a cardboard box. We started with 36 people in the club and ended the day with over 100! Right now we're using groupme for our communication, and it's not ideal for so many people. I'm thinking of trying #mattermost, #rocketchat or #matrix. Which one should I choose? Any other suggestions?
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