cmus cmus is a music player that I admire the most when it comes to command-line because it’s really powerful and has a lot of nice features. It is built with ncurses and therefore providing a text-user interface. cmus is indeed feature-rich, with several view modes and Last.fm song submission support via scripts.
IRC (Internet Relay Chat) is a protocol for text-based internet chat created by Jarkko Oikarinen in 1988. Ever since it was developed, IRC gained more and more popularity and currently it's one of the standard ways for projects and distributions to provide online help, for developers to meet and discuss aspects regarding their work.