NSC is a set of utilities for easy administration of DNS servers. You write very simple configuration files and NSC automatically generates zone files, reverse zone files, and configuration for the BIND. Among other things, it also supports classless reverse delegations and IPv6 addressing. NSC is written in POSIX shell and GNU M4, and it should run on all systems where these two languages are available. Generation of DNS daemon config files is currently limited to BIND 8 or 9, but it's very easy to add your own config file generators for other daemons.
The PCI Utilities package contains various utilities dealing with the PCI bus, and also a library for portable access to PCI configuration registers. It includes `lspci' for listing all PCI devices (very useful for debugging of both kernel and device drivers) and `setpci' for manual configuration of PCI devices.
Sherlock Holmes is a modular system for gathering and indexing textual and image data, and searching in it. The most popular application is, of course, indexing of Web pages ranging from small Web sites to whole top-level domains, but other data sources, parsers, and user interfaces can be added easily.
Metaclip is a distributed clipboard for the X Window system, allowing the contents of the X selection (clipboard) to be shared among several users. It uses an ordinary HTTP server to keep the clipboard's contents, so it can be easily used even if the clients have dynamically assigned addresses.