Slack - A messaging app for teams who see through the Earth!
Missive - Team communication app now supporting FB, Twitter & SMS
chatmego - Sign in to chatmego or create an account - start connecting new friends with me, share photos, videos, messages, a story, and vote with me
Slack for Mobile - Rebuilt from the ground up
Loop Email - Emailing for teams: Organize your Inbox into channels 💌
Jive Chime - Real-time messaging for your team