"OpenERP
OpenERP is claimed to be a complete ERP and CRM system. It has
separate client and server components. Among the features are
management accounting, financial accounting, inventory management,
sales and purchase management, tasks automation, Human Resource
Management, marketing campaigns, help desk, and point of sale. Open
ERP is known to be very complete and extremely modular, with 350
available modules. It is based on a strong MVC architecture, with a
distributed server, flexible workflows, an object database, a
dynamic GUI, an XML-RPC interface, and customizable reports."