ERP5

ERP5 is an open source ERP based on Python and Zope. It has the particularity of being based on a unified model to describe its implementation.

== Unified model == Whereas most ERPs are based on business field specific models and culture dependent ontologies, ERP5 uses a single model, called the Unified Business Model, that is used to describe all its components. This approach to enterprise modeling was introduced in 2002 by Smets and Carvalho. The UBM relies on 5 generic concepts, namely node, resource, movement, item and path. According to Carvalho, abstraction and genericity not only reduce the complexity of ERP5 systems but also increase code reuse incentive and sustainability. Thanks to this unification, a typical ERP5 implementation thus consists of 20 to 30 tables whereas the implementation of an ERP based on traditional enterprise modeling requires thousands to tens of thousands of tables because they need to piece together several components.