Sametab - Share company announcements in your coworker's new tab
Missive - Team communication app now supporting FB, Twitter & SMS
Slack - A messaging app for teams who see through the Earth!
Mailtrim - Email lives forever!. Reinvigorate your emailing experience with the best free email client, the Mailtrim
Threads - Making work more inclusive.
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.