Voxer - Turn your phone into a Walkie Talkie. Don't waste time on phone calls and voicemails.
Slack - A messaging app for teams who see through the Earth!
NextPlane - NextPlane offers cloud-based, scalable unified communications federation service for the enterprise.
MS SharePoint - Share, organize, and discover information with Microsoft SharePoint. Learn about SharePoint Online, OneDrive for Business, and Apps for SharePoint
Sameroom - Chat interoperability-as-a-service
Jostle - A new kind of employee intranet that drives engagement & workplace culture. Achieves social participation in work relevant way. Participation rates are over 85%.