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opentaps Open Source ERP + CRM is an Java J2EE web enabled open source Enterprise Resource Planning (ERP) and Customer Relationship Management (CRM) system.  opentaps supports customer relationship management, sales force automation, sales opportunities management, customer support case management, sales opportunity management, order entry and order management, warehouse and inventory management, supply chain management, purchasing, material resources planning (MRP), manufacturing management, Accounts Receivable, Accounts Payable, General ledger, and financial reporting.  opentaps offers the Apache OFBiz ecommerce system out-of-the-box and supports integration with the Magento e-commerce system, Amazon seller Central, ebay, and GoogleBase (froogle).  opentaps is based on open source projects including Apache Tomcat, Apache Lucene, Apache Derby, JasperReports business intelligence, Pentaho BI suite, Spring framework, Hibernate, Funambol.  Read more about why open source is the right solution for ERP.