The Apache Open For Business Project is an enterprise automation software project that includes ERP, CRM, E-Business/E-Commerce, SCM, MRP, and CMMS/EAM functions. It is a foundation and starting point for enterprise solutions and can certainly be used out of the box, but is also great for creating specialized applications.
Oness is an ERP, CRM, SRM, and inventory management solution primarily supporting the textile commerce. It is based on J2EE technologies such as Spring, Hibernate, Struts, XDoclet, AspectJ, and Maven with a JSP-based Web interface. It is completely modular and thoroughly documented.