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.
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Dropbox - Online Sync and File Sharing
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.
Google Drive - Access and sync your files anywhere
Listary - Listary is a revolutionary search utility for Windows
Mega - Secure File Storage and collaboration