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
Boomi - The #1 Integration Cloud - Build Integrations anytime, anywhere with no coding required using Dell Boomi's industry leading iPaaS platform.
Google Drive - Access and sync your files anywhere
SAP NetWeaver - SAP NetWeaver enables the composition, provisioning, and management of applications across a heterogeneous software environment
Mega - Secure File Storage and collaboration
Pimcore - Pimcore is an award-winning data management and customer experience management software.