CONV. - Convert YouTube video to MP3, GIF or MP4
fzf - A command-line fuzzy finder written in Go
Downie - Video download for OS X. Downie supports at this moment over 1,000 different sites.
fzy - A better fuzzy finder
Yout - YouTube to Mp3 Converter
skim (fuzzy finder) - Discover open source libraries, modules and frameworks you can use in your code