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
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Google Drive - Access and sync your files anywhere
Mega - Secure File Storage and collaboration
4Shared - 4shared is a perfect place to store your pictures, documents, videos and files, so you can share them with friends, family, and the world. Claim your free 15GB now!
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.