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
Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
Google Drive - Access and sync your files anywhere
Burp Suite - Burp Suite is an integrated platform for performing security testing of web applications.
Mega - Secure File Storage and collaboration
OpenVAS - The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools...