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
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Google Drive - Access and sync your files anywhere
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Mega - Secure File Storage and collaboration
Listary - Listary is a revolutionary search utility for Windows