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.
Synthesio - Synthesio is a social intelligence tool or a marketing software that is specially made for the purpose of social media monitoring and social analytics.
Dropbox - Online Sync and File Sharing
Swift Social - All-in-One Social Media Growth and Management Tool
Google Drive - Access and sync your files anywhere
LeadsRX - LeadsRX is a marketing attribution software that gives marketers insights into which advertising campaigns result in conversions.
Mega - Secure File Storage and collaboration