Skype for Slack - Move your slack discussions to a group skype call
Pingly - Your communication hub โ Email, text & voice in one app
HandsFree 2 - Call and SMS in Mac using your Android phone via Bluetooth
Missive - Team communication app now supporting FB, Twitter & SMS
Whiteboard for Skype Interviews - Skype brings a whiteboard to Skype Interviews
Loop Email - Emailing for teams: Organize your Inbox into channels ๐