Imgur's Video to GIF - Make a GIF from hundreds of video sites
Youtube Mp3 Today - Convert youtube videos to mp3 in 1 click every time
GIFMaker for Mac - GIFMaker – Created a GIF from a video or Images is the easiest way to create an animated GIF on your Mac.
MediaHuman YouTube to MP3 Converter - Extracts MP3 audio from YouTube, Vimeo, Dailymotion, Mixcloud, Bandcamp, SoundCloud and many others. Available for macOS, Windows and Ubuntu/Linux. FREE!
CONV. - Convert YouTube video to MP3, GIF or MP4
yt2mp3.org - Free online YouTube to MP3 Converter