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.
Coverity Scan - Find and fix defects in your Java, C/C++ or C# open source project for free
Dropbox - Online Sync and File Sharing
SonarQube - SonarQube, a core component of the Sonar solution, is an open source, self-managed tool that systematically helps developers and organizations deliver Clean Code.
Google Drive - Access and sync your files anywhere
ReSharper - ReSharper is a productivity tool for visual studio that provides tools and features to help you manage your code.
Mega - Secure File Storage and collaboration