Kirigami YouTube video player based on QtMultimedia and youtube-dl.
AudioTube
Client for YouTube Music
QMPPlay2
QMPlay2 is a video and audio player. It can play all formats supported by FFmpeg, libmodplug (including J2B and SFX). It also supports Audio CD, raw files, Rayman 2 music and chiptunes. It contains YouTube and MyFreeMP3 browser.
Persepolis
Persepolis is a download manager & a GUI for Aria2.
Olivia
Elegant music player for LINUX
FreeTube
FreeTube is an open source desktop YouTube player built with privacy in mind.
ClipGrab
ClipGrab is a free downloader and converter for YouTube, Vimeo, Facebook and many other online video sites.