eGility: Drupal ERP based Shopping Cart - Martin Fuggle
There are a few scenarios where Ubercart or Drupal commerce cannot meet the needs of a business, especially when the business is engaged in multiple channels of product distribution - multiple Point of Sale (POS) systems, multiple online stores, multiple warehouses, etc. A full blown ERP is usually sought in such situations, however this brings in a massive complexity with synchronisation of user, product, pricing and inventory to be presented online.