Looking for Advice on Apps for Organizing a Plural System

howdy! so, a few questions for fellow systems; where do y'all gather & what apps do you personally use to meet and speak with other plurals? and what apps do you use to organize your own system or communicate? with 35+ of us, we have difficulty staying organized and everything staying "familiar". we've tried dozens of apps for system mapping and keeping track of members but haven't found one that's "just right" without a massive paywall and we're terrible at communicating through methods usually "meant" for systems (discord with pluralkit, mytter, etc) because we often have several people fronting at once and are frequently too blurry to "sign off" as just one person. a private twitter has been the most consistent one for us. what do y'all use??