Linux-Based Billing And Business Application Server For FREE use.
Open Source Openbravo POS convert to Commercial Retail ERP and POS
Open Source Integrated Hospital Information Management System
Reverse engineering API
QRK Registrierkassen Software für kleine Betriebe.
A basic PHP/MySQL/HTML Billing APP. Meant for developers learning.
Membership management software
jBilling is a web-based enterprise billing system.