Tableutil is a utility for converting, aggregating, and performing operations (currently unions, differences, complements, and intersections) on lists of IP addresses. Its primary use is to convert files into a format pfctl(8) can read. It can read plain-text files with ranges (126.96.36.199-188.8.131.52), CIDR-style networks (192.168.0.0/24), single addresses (242.242.242.242), or host names (one.two.com). It can also read p2b files, the preferred file-format of PeerGuardian.
LibJAD is collection of miscellaneous routines for a variety of purposes. This library includes functions of reading ini style files, multi-threaded programming, finding the number of processors available on the system, computing combinations and permutations, base64 and URL encoding, and working with ASN1 and PGM files.
NTW Lisp is a server written in Common Lisp for applications that use the NTW protocol to communicate with a GUI client. This asynchronous protocol makes it possible to serve remote applications that are indistinguishable from native ones. It's also useful for quickly writing GUI apps from Common Lisp that can be run locally.
The Zero Calorie DNS is a domain name server for which the binary weighs in at 26K, that has no dependencies other than the minimal FreeBSD 6.0 installation. The server responds to "name server" (NS), "start of authority" (SOA), "address record" (A), "reverse address" (PTR), and "mail exchanger" (MX) requests. The server is fairly fast because the feature set has been trimmed down to the bare minimum. A few things are hard-coded so that a two minute setup is easy to accomplish. The hard-coding means that it may not be for everyone, however.
FreeBST ports monitoring is a simple solution for monitoring what has changed in installed ports on a given FreeBSD machine, i.e. what ports were upgraded, installed, or removed. No fancy dependencies: just plain Ruby and shell commands. Results in plain English text are emailed to a given address.