For building different kind of business applications, Apache OfBiz is widely used among corporates. It is an open source Enterprise Resource Planning system that has different business systems integrated and is easily adaptable to build any kind of business software.
NOI Technologies has been working on Apache OfBiz and has a number of ERP applications. We have also been OfBiz consultants for our clients extending and updating their existing ERP appliations.
Share your new application idea or any exisiting problem. We are happy to assist you!!