MS SharePoint - Share, organize, and discover information with Microsoft SharePoint. Learn about SharePoint Online, OneDrive for Business, and Apps for SharePoint
Dropbox - Online Sync and File Sharing
NemakiWare - NemakiWare is an Open Source CMIS-compliant platform for document management.
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Mayan EDMS - Document management without the headaches.
Google Drive - Access and sync your files anywhere