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.
The ucspi-tcp distribution contains tcpserver and tcpclient, which are easy-to-use command-line tools for building TCP client-server applications. tcpserver waits for incoming connections and, for each connection, runs a program of your choice. tcpclient makes a TCP connection and runs a program of your choice. This package includes several sample clients built on top of tcpclient: who@, date@, finger@, http@, tcpcat, and mconnect. tcpserver and tcpclient conform to UCSPI, the UNIX Client-Server Program Interface, using the TCP protocol. UCSPI tools are available for several different networks.
VAMP (Very Attractive Mail Program) is an extremely easy-to-configure, usable, Web-based email client written in PHP3 (and compatible with PHP4). It is for use with POP3 servers, and it also supports "Virtual Domains", encryption (under Linux/PHP3), attachments, contact list, a signature database, an easy-to-use setup tool, and more.
VCDGear is a program designed to allow a user to extract MPEG streams from CD images, convert VCD files to MPEG, and correct MPEG errors in a single step. It is available for most commonly used operating systems. People requiring transportation of their video materials will find VCDGear useful in getting the video to play on their computer or Video CD player.