TrinityOS is a step-by-step, example-driven HOWTO on building a very functional Linux box with strong security in mind. TrinityOS is well known for its strong packet firewall ruleset, Chrooted and Split DNS (v9 and v8), secured Sendmail (8.x), Linux PPTP, Serial consoles and Reverse TELNET, DHCPd, SSHd, UPSes, system performance tuning, the automated TrinityOS-Security implementation scripts, and much more.
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.
Tea4CUPS is similar in functionality to the *nix command "tee", but in the form of a CUPS (Common UNIX Printing System) backend. Tea4CUPS captures a print job's data in their final form while they are being sent to a printer (more precisely, to a CUPS backend), and at the same time allows you to dispatch these data to any number of commands.
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.
PrinterSetup is a flexible printer setup system. It is tailored to institutions with more than 20 deployed printers. It is designed to work with CUPS on Mac OS X. PrinterSetup is a component of PrintingWorks, a print accounting solution. There is limited documentation. Apple package deployment requires Mac OS X 10.3 or later, and is untested on earlier versions. Apple package development requires Mac OS X 10.5 or later and Xcode 3.0 or later.