Press Release Summary = jbilling is an open source recurring billing system. It calculates and generates the invoices, handles automatic payment processing with credit cards, notifies the customers about the status of their accounts and allows customer self-service through its web-based user interface. It runs on any OS and several databases.
Press Release Body = Best things in life are always free. When it comes to billing software, merchants can't ask anything better than a fully functional billing system that integrates with existing database, supports online integration and automatically handles invoicing and payment processing.