uniCenta oPOS is a branch of Openbravo POS point-of-sale and is capable of running on displays from 800x600 upwards. Most known Openbravo POS bugs have been fixed and enhancements to hardware options, additional reporting and localization.
Floreant POS is a platform independent Point of Sale application that greatly benefits Restaurant business simplifying order management, automation of kitchen and keeping control of cash.
Gazelle Point-of-Sale is an advanced web-based Point-of-Sale, inventory, customer and staff management system aimed to meet the needs of small and medium enterprises. It boasts innovations such as mobile access, offline cloud and built-in online store, giving you an edge over...
PHP Point of Sale (POS software) is an online point of sale system designed to help small businesses with POS tracking of customers, inventory and sales. This program works great for retail businesses that use cash, check or account numbers in their POS transactions
Lemon is a Point of Sale software targeted for micro, small and medium businesses. It provides a modern themeable and easy to use Interface, a search panel, a price-checker tool, an administration tool for managing your store, printed reports, and more...Discontinued
As noted in description, no development activity on quite a long time. Last Update: 2013-05-28. See https://sourceforge.net/projects/lemonpos/