The Poor Woman's Telnet Server was quickly hacked together to provide a simple cross-platform telnet server. For non-Windows or non-Unix operating systems, you must adapt the call for the system shell. It is not advisable to run such an program on a production server, but for software development and testing purposes this program can satisfy some needs. It doesn't require a password and starts a system shell as the user who started the server.
rxvt-unicode is a clone of the well known terminal emulator rxvt, modified to store text in Unicode and to use locale-correct input and output. It also supports mixing multiple fonts at the same time, including Xft fonts, real transparency, and an optional embedded Perl interpreter that allows you to extend your terminal easily.
xtermcontrol enables dynamic control of XFree86 xterm properties. It makes it easy to change colors, titles, fonts, and the geometry of a running xterm, as well as to report the current settings of the properties. Window manipulations such as (de)iconify, raise and lower, maximize and restore, and reset are also supported. It also lets advanced users issue any xterm control sequence.
x11vnc allows one to remotely view and interact with real X displays (i.e. a display corresponding to a physical monitor, keyboard, and mouse) with any VNC viewer. It is designed to be compatible with all Unix variants and Mac OS X, and depends on a small set of standard libraries. It supports SSL/TLS and VeNCrypt encryption, Unix password logins, single port access, Zeroconf, file transfer, and UltraVNC extensions. It is part of the LibVNCServer project.
PrinterSetup is a flexible printer setup system. It is tailored to institutions with more than 20 deployed printers. It is designed to work with CUPS on Mac OS X. PrinterSetup is a component of PrintingWorks, a print accounting solution. There is limited documentation. Apple package deployment requires Mac OS X 10.3 or later, and is untested on earlier versions. Apple package development requires Mac OS X 10.5 or later and Xcode 3.0 or later.
KildClient is a MUD client written with the GTK+ windowing toolkit. It supports many common features of other clients, such as triggers, gags, aliases, macros, timers, and much more. But its main feature is the built-in Perl interpreter. At any moment, the user can execute Perl statements and functions to do things much more powerful than simply sending text the the MUD. Perl statements can also be run, for example, as the action of a trigger, allowing you to do complex things.