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
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Google Drive - Access and sync your files anywhere
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Mega - Secure File Storage and collaboration
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.