Zapya - Zaypa is a cross-platform transferring and sharing!
Yandex.Disk - Files on Yandex.Disk won't get lost if your phone or computer breaks.
SHAREit - SHAREit allows you to transfer files and data from your phone to another device without having to rely on WiFi or a data plan.
CloudBerry Box - CloudBerry Box provides bi-directional synchronization of data across remote computers.
Send Anywhere - Send whatever you want, wherever you want
Cloudu - Secure German online storage and file sync service. Apps for all major platforms.