Dropbox - Online Sync and File Sharing
Mayan EDMS - Document management without the headaches.
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Alfresco - Alfresco Platform is an open, modern and secure system that intelligently activates process and content to accelerate the flow of business.
Google Drive - Access and sync your files anywhere
Nuxeo - Nuxeo provides a hyperscale digital asset platform, enabling organizations to unlock the full value of all enterprise digital assets.