trickle is a lightweight, portable, per-application bandwidth shaper. It works in collaboration, has peak detection, and does smoothing. trickle works entirely in userland and does not require root to run. It has been developed on OpenBSD and is known to run on Linux, FreeBSD, and Solaris.
ucspi-ipc implements D. J. Bernstein's UCSPI protocol in the Unix domain, making it trivial to set up clients or servers on Unix sockets. ucspi- ipc comes with utilities using credential passing on Unix sockets, which are designed to act like a fine-grained and efficient sudo without the need for setuid programs.
Userinfo is a console utility to display a variety of information about a local user. It uses loadable modules to perform different tasks, which separate the output with a field deliminator. Some may find it useful in shell scripts to gather information that might be tedious by other methods.
vines draws vines (wandering plants made up mostly of stems and leaves) on your X11 or SunView screen. By default it draws in black and white, but color options (spring and fall) are provided. The vines can grow across the top of your screen and down the side, down from the top of your screen until they reach the bottom, or start from the center and wander all over the screen forever.
vobps2fix is a tool that runs through a set of .VOB files created by dvdauthor and tweaks them so that the Playstation 2 will play them without pausing. The Playstation 2 is a bit finicky about the DVD format and pauses frequently when encountering certain timestamps, even if the DVDs work on other players.