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
Binfer - Direct device-to-device data transfer platform
Google Drive - Access and sync your files anywhere
Teamplace - The Unlimited Cloud Storage made for Teams!
Mega - Secure File Storage and collaboration
Filegear - Filegear is a smart documents management platform that allows users to exchange files for official or individual purposes with instant download or upload efficacy as an online mode.