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.
Pushbullet - Pushbullet - Your devices working better together
Dropbox - Online Sync and File Sharing
AirMore - AirMore is a cross-platform toolset that can help you manage any Android device wirelessly.
Google Drive - Access and sync your files anywhere
MyPhoneExplorer - WHAT IS MY PHONE EXPLORER? Imagine if your PC could be used to keep track of your mobile phone? How would you utilize a PC client that connects to your phone? Read more about MyPhoneExplorer.
Mega - Secure File Storage and collaboration