Dropbox - Online Sync and File Sharing
GMX File Storage - The GMX File Storage Manager allows your PC and your GMX File Storage to exchange data via the...
Syncthing - Syncthing replaces proprietary sync and cloud services with something open, trustworthy and...
Cloudu - Secure German online storage and file sync service. Apps for all major platforms.
Nextcloud - With Nextcloud enterprises host their own secure cloud solution for storage, collaboration & communication from any device, anywhere.
CloudBerry Box - CloudBerry Box provides bi-directional synchronization of data across remote computers.