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
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
Google Drive - Access and sync your files anywhere
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Mega - Secure File Storage and collaboration
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.