http://www.darkblueduck.com/Products/ScanningEnablerWSS.aspx

Features

• Seamlessly integrated with SharePoint User Interface.
• Adds Scanning functionality to all new and existing document libraries.
• Supports custom metadata capture and workflow.
• Supports all Microsoft supported server farm architectures.
• Easy to install.
• Implementation support provided by email and phone.
• Based 100% on SharePoint technology.