tkbiff allows arbitrary commands to be executed upon mail reception. If you like programs such as xbiff and xbiff++ but wish they were more flexible, then you'll like tkbiff. Unlike other biffs, tkbiff is fully customizable. tkbiff also doesn't waste your valuable screen space with icons; instead, it shows you the mail itself. It supports UNIX, Mac, and Windows, IMAP, POP, and UNIX-style mail files, and SSL and APOP.
"Stupid Simple VPN" is a virtual private networking program contained as source in a 7.0KB tarball. It does not daemonize, and is intended to create a temporary VPN for emergency circumstances when you "just need a pipe" without the hassle of authentication, keys, encryption, and compression. It runs on OS X using the tuntaposx driver and Linux 2.6 using the native tuntap driver.
The National Space Science Data Center's (NSSDC) Common Data Format (CDF) is a self-describing data abstraction for the storage and manipulation of multidimensional data in a platform- and discipline-independent fashion. It consists of a scientific data management package (known as the "CDF Library") that allows programmers and application developers to manage and manipulate scalar, vector, and multi-dimensional data arrays.
JobRunner is a tool designed to run a job (i.e., to execute a commandline or script) which does not require user interaction, and to store the program's output (standard error and standard out) in an easy-to-read log file. It is able to save a configuration file of the job to be run, which can be used by JobRunner_Caller as a lightweight queueing system. See the Primer included in the archive for extra details on usage examples.
Moosic is a music player that focuses on easy playlist management. It consists of a server process that maintains a queue of music files to play and a client program which sends commands to the server. The server continually runs through its playlist, popping items off the top of the list and playing each with an external program. The client is a simple command-line utility which allows you to perform powerful operations upon the server's queue, including the addition of whole directory trees, automatic shuffling, and item removal according to regular expressions. The server comes configured to play MP3, Ogg, MIDI, MOD, and WAV files.
BitTorrent is a tool for copying files from one machine to another. FTP punishes sites for being popular. Since all uploading is done from one place, a popular site needs big iron and big bandwidth. With BitTorrent, clients automatically mirror files they download, making the publisher's burden almost nothing.