citrusdb is customer care and billing software that can be used in many different service providers, including Internet service, subscriptions, consulting, and telecommunications. It provides CRM, ticketing, invoicing, and credit card batches.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.