Facebook Groups - This app gives you a dedicated space for you and your groups
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Mobilize - Mobilize is a scalable messaging app built for large groups.
Face to Face - Video meetups for online communities (PH room password meow)
Telegram Desktop - Fast and secure desktop messaging app, now updated
Skype for Slack - Move your slack discussions to a group skype call