DocGen - Static website generator
Dropbox - Online Sync and File Sharing
LogicalDOC - A document management system such as LogicalDOC can help your organization better manage business processes and put order in the chaos of documents every day run your business.
Google Drive - Access and sync your files anywhere
openSourceCM - Web-based legal document processing and contract management
Nextcloud - With Nextcloud enterprises host their own secure cloud solution for storage, collaboration & communication from any device, anywhere.