PyKota is a full featured, internationalized, centralized, and extensible print quota system for CUPS. It supports PostgreSQL, OpenLDAP, MySQL, or SQLite as the quota database backend. This software features most of what you might expect from a modern print quota and accounting solution. Its flexibility and configurability greatly eases its integration into your own computing environment.
nexB OpenAssets is a tool for inventorying, managing, and monitoring applications, software, hardware, networks, and generally any IT asset. It is designed so that system administrators, IT, and finance can determine what they have, how it is configured, what it is used for, and how much it is being used, so that informed decisions can be made. It complements existing network management software, integrates with a growing number of protocols and tools, and features no-agent discovery and inventory, configuration management including dependencies and correlation, monitoring, and reporting. It makes extensive and innovative use of XML, Xpath, and Xquery.
GNU Radius is a RADIUS server and an accompanying set of monitoring utilities. It features MySQL and PostgreSQL interfaces for authentication and/or logging (the ODBC interface allows you to use almost any existing DBMS for that purpose), the ability to rewrite RADIUS requests from various NASs to normalize them to a more understandable format, and the ability to completely customize the behavior of RADIUS authentication and accounting based on NAS and user attributes.
DreamHost supports automated billing. All hosting, domains, orders, accounts, statistics, and billing can be viewed and updated in the admin area (no programming or HTML experience needed). It supports all top level domains, and you can add or remove as many as you like. Each top level domain can be assigned a different registration cost for each year (1-10 years). Customers can login and update their account information and password. It uses MySQL and PHP, making it very fast and dependable. It includes many more convenient features.
sysXs is a control panel solution for enterprise use. It automates administration, accounting, and billing of Internet services using a Web-based interface suitable for any browser. It can be used on a wide variety of platforms. By implementing a flexible user management that includes customer self care functionality, it's not restricted to the classic vendor/reseller/customer scheme.
SGQI is a print quota system for CUPS. It features per-printer user and group quotas, automated popup messages to users, and a Web application that lets users access print quota usage reports with a complete job history. Users, groups, printers, and quotas are all administered through the Web.