TortoiseSVN - The coolest interface to (Sub)version control
Sync.com - Sync. com offers a backup tool and a file sharing service, rolled into one.
Xversion - Super easy enterprise class version control.
Zoho WorkDrive - File storage & content collaboration tool for modern teams
RapidSVN - CollabNet, Facilitating Collaborative Software Development
Yandex.Disk - Files on Yandex.Disk won't get lost if your phone or computer breaks.