I found the answer, there is no difference for developers but the difference is on user's side.
Based on one core platform, your site can provide the capabilities of one or both products:
DocuShare and DocuShare CPX. Key features in the products enable you to:
• Create and maintain your own account and personal work area without the
assistance of a web master or site administrator.
• Add and control access to site content.
• Maintain multiple versions of a document, track its revision history, and lock a
document to prevent simultaneous editing.
• Collaborate on content using wikis and weblogs.
• Scan paper documents to site locations.
• Route documents for approval or review.
• Create project-oriented areas for managing the content, people, and tasks.
(DocuShare CPX only)
• Set up content rules to automate a work process. (DocuShare CPX only)
This guide describes how to use the features in both DocuShare and DocuShare CPX.
Any feature unique to DocuShare CPX is indicated by the text DocuShare CPX only.
