These utilities allow one to detect automatically printers using UDEV when they are plugged on the system. They are then configured automatically in the CUPS printing daemon and made available to users.

xxd creates a hex dump of a given file or standard input. It can also convert a hex dump back to its original binary form.

xorriso is a command line and dialog application, which creates, loads, manipulates, and writes ISO-9660 file system images with Rock Ridge extensions.

Radicale is a CalDAV (calendar) and CardDAV (contact) server.

mpg123 is a real time MPEG 1.0/2.0/2.5 audio player/decoder for layers 1, 2 and 3 (MPEG 1.0 layer 3 also known as MP3).

rofi can act as an application launcher, window switcher, ssh launcher and dmenu replacement.