Yash is a command line shell that conforms to the POSIX.1 (IEEE Std 1003.1, 2008 Edition) standard for the most part. Actually, it is much more POSIX-compliant than other shell like bash and zsh.

SNMP Simulator is a software that would act like a multitude of real physical devices from SNMP Manager's point of view. Simulator builds and uses a database of physical devices' SNMP footprints to respond like their real counterparts do.

comport is a cross-platform object for Pure Data that allows you to read and write bytes and lists of data to /dev/tty* devices including serial port, USB-serial devices, Bluetooth-serial, etc.

Given a set of strings, this module computes a list of distinct abbreviations. This is handy for command-line scripts, or other cases where one wants to be able to accept shorthands.

xcolorsel is an X utility that displays the contents of the X color list file (/etc/X11/rgb.txt) together with tiles showing how the color looks on your screen. You can cut the color names/definitions in various formats (suitable for resource files or C source) so they can be pasted directly into source codes or resources.

The newmail program usually puts itself in the background and watches mailbox files in order to report when new mail has been arrived. The originator and subject will then be reported on the terminal it was started. The output can also be integrated in graphical programs.