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.
Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
Dropbox - Online Sync and File Sharing
SocialPilot - SocialPilot is an app designed to help businesses and professionals with social media marketing.
Google Drive - Access and sync your files anywhere
Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.
Mega - Secure File Storage and collaboration