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.
GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.
Dropbox - Online Sync and File Sharing
FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
Google Drive - Access and sync your files anywhere
rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.
Mega - Secure File Storage and collaboration