Sync.com - Sync. com offers a backup tool and a file sharing service, rolled into one.
NextPlane - NextPlane offers cloud-based, scalable unified communications federation service for the enterprise.
Zoho WorkDrive - File storage & content collaboration tool for modern teams
Voxer - Turn your phone into a Walkie Talkie. Don't waste time on phone calls and voicemails.
kDrive - The most privacy-friendly online storage and file sync service. From 2 TB, hosted in Switzerland.
Sameroom - Chat interoperability-as-a-service