Greytrix publishes an integration with Sage 500. It uses the same GUMU architecture as Greytrix’s integrations with 100, X3, and Intacct. And while it does not have the same depth as the Sage 100 integration, it is pretty good, providing for customer integration AND the ability to create Orders from Sage CRM’s web-accessible interface that can be promoted directly into Sage 500’s Order Module.
A full write-up is found on the Sage 500 CRM page of the My CRM Manager website.