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.
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Dropbox - Online Sync and File Sharing
Google Drive - Access and sync your files anywhere
Send Anywhere - Send whatever you want, wherever you want
Mega - Secure File Storage and collaboration
Wormhole.app - Wormhole lets you share files with end-to-end encryption and a link that automatically expires.