NetMess is a peer-to-peer file sharing system. Its advantages over other p2p systems include clone detection and the ability to work through an HTTP proxy and through most firewalls (both inbound and outbound). NetMess can also run in a LAN environment, serving as a nice information sharing system for small to middle-sized companies. NetMess allows its users to search and retrieve documents without having to remember their exact location.
XMail Queue Manager gives you control over an XMail Server's multi-level nested mail queue. You can use it to track messages in their different states (sending, resending, and frozen). Statistics tell you about the number of spooled messages. You can sort entries by any column header field, and can start and stop the server directly. The cross platform remote control feature allows you to manage queues on remote servers without a GUI.
Alkaline is a full-featured standalone search and index server. The spider is a fully remote indexing daemon which includes support for all standards like robots.txt and "skip" meta tags, and allows multiple distinct configurations and search groups (searching many different sites from your server), including complex regexp indexing paths, authentification, filters for various document formats, XML-based online management and statistics, mrtg-compatible perf numbers, and more.
PostArmor (formerly MailArmor) helps to keep your electronic mailbox free of spam: it looks at the relevant parts of your email before it leaves the mail server, and lets the legitimate messages pass through undisturbed, while leaving suspect messages on the server to be reexamined later or just deleted after a while. It works as a POP3 email proxy, with support for POP, APOP, and IMAP servers. It supports SpamCop reports and blacklist, and the ORDB and OSIRUSOFT blacklists.
tn5250 is a 5250 terminal emulator, used for connecting to IBM's AS/400 (now known as eServer iSeries) midrange computers. tn5250 implements TN5250E, which means it is capable of device name selection, and printer sessions. The emulator supports color, 132 column mode, and most other features found in 5250 terminals and Client Access' 5250 emulator. While tn5250 is text-based application, a script is included to run it in an xterm properly. If you don't know what an AS/400 is, this program will probably not be of much use to you.