For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
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...
Google Drive - Access and sync your files anywhere
Cloudu - Secure German online storage and file sync service. Apps for all major platforms.
Mega - Secure File Storage and collaboration
Yandex.Disk - Files on Yandex.Disk won't get lost if your phone or computer breaks.