Ganglia is a scalable distributed monitoring system for high-performance computing systems such as clusters and grids. It is based on a hierarchical design targeted at federations of clusters. Ganglia is currently in use on over 500 clusters around the world and has scaled to handle clusters with 2000 nodes.
Prima is an extensible Perl toolkit for multi-platform GUI development. Supported platforms include Linux, Windows NT/9x/2K, OS/2, and UNIX/X11 workstations (FreeBSD, IRIX, SunOS, Solaris, and others). The toolkit contains a rich set of standard widgets and has emphasis on 2D image processing tasks. A Perl program using Prima looks and behaves identically on X, Win32, and OS/2 PM.
PPR is a Unix print spooler expressly designed for operating PostScript printers. Its features are numerous, and it supports printers connected to parallel or serial ports, or over the network through AppleTalk, LanManager, LPD, and TCP/IP protocols. It accepts jobs from Microsoft Windows, Macintosh, and Unix clients. If the input file is not PostScript, it can pipe the input through a filter. PPR has been designed to manage large numbers of printers with minimal operator attention. It has command line and Web interfaces.
Tellu is inventory management software that collects hardware and software information automatically from networked servers and workstations, and stores collected data in MySQL database where data is easily readable using a comprehensive user interface usable by any modern Web browser. Devices (like routers and switches), peripherals (like video projectors and displays), and service providers (like hosting and maintenance) can also be stored in the database using a Web interface called Tellu Skin. Inventory management is only one part of Tellu's capability, Tellu offers the possibility to group together workstations, servers, devices, passwords, file attachments, and others to form a faction. For example, a faction can contain all the stuff that a development team needs in their development environment.
Addns.pl is a self-contained DynDNS update client for DynDNS.org (and possibly others). It supports a variety of IP detection methods including external webcheck/router pages. It also supports multiple configurations and hostnames, smart abuse prevention, and custom/static/dynamic DNS, and can run as a daemon, commandline options only, or with a configuration file.
GNUlpr version 1.0 is a complete printing system based on LPR, and provides support for printer-specific options, GUI tools, and autoconfiguration. The 1.1 tree is a completely re-thought printing system. Rather than creating an all-powerful spooling daemon, it constructs a pipeline of "filter" programs to perform tasks (spooling, data stream type conversion, authentication, network protocols, etc.).