Howl is a cross platform implementation of the Zeroconf zero configuration networking standard. It includes daemons and a client side SDK for registering, browsing, and resolving network services, and assigning link local IP addresses without a DHCP server. On Windows 2000/XP, it includes a sidebar in Internet Explorer that allows users to browse zeroconf-enabled Web and FTP servers.
Free focused scroll is a driver for the trackpad on Apple PowerBooks. It is an alternative to SideTrack and an improvement upon iScroll2. It achieves its advanced features by running the trackpad in what is called "absolute" mode. This means that the driver can tell exactly what part of the pad your finger is touching. The Apple driver (and iScroll2) both run the pad in "relative" mode, and while that facilitates a simpler driver because the pad does most of the work, it is very limiting of what you can do.
mxml2man is a modified version of Apple's xml2man script that creates man pages starting from XML files. It not only supports all the XML files that are supported by xml2man, but extends the format to support more feature for advanced man page generation. The build process is done with autotools instead of using the provided makefile from Apple.