PhreeSoft | Small business solutions built with PHP!
Free Java ERP and CRM - jfire.net
xTuple | Open Source ERP for Mac, Linux and Windows
Accounting, CRM and ERP PostBooks is a full-featured, fully-integrated business management system, the core of the award winning xTuple ERP Suite. Built with the open source PostgreSQL database and the open source Qt framework for C++, it provides the ultimate in power and flexibility for a range of businesses and industries of any size. Please contact us for more product information or to schedule a guided demonstration. PostBooks | Open Source ERP for Mac, Linux and Windows