Lyrics Training - A game where you fill in the lyrics of your favorite songs
mps-youtube - Terminal based YouTube player and downloader
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
ttygif - Convert terminal recordings to animated gifs
Lyricsgaps - Learn Languages Online - Exercises Listening - Fill in the gaps
ttyrec - record from terminal