UberPOS | drupal.org

Open source point-of-sales system built on top of the Drupal and Ubercart. It provides an interface for cashiers to easily add products to a customer's order, as well as remove them, accept payment, cancel entire orders and print receipts.

The current theme is similar to IS4C's co-op grocery POS system which uses a programmable keyboard. Touch screen interfaces are also possible but are not yet being developed.

Uberpos is currently being tested, and works well in a shop with a single cash register.