reEmbed - Custom YouTube Video Player
Palco MP3 - Palco MP3 is the largest Brazilian application for independent artists and offers more than 1 million songs for you to listen and download on your mobile device.
TabFloater - Browser extension to use picture-in-picture with any website
Musicolet - Musicolet is a small yet feature-rich offline Music Player for Android.
Vid Repeat - Loop YouTube videos for X minutes or for X times. Loop a full video, or only a selected part, add a delay between the loops, and share the loop with your friends.
Audiomack - The free SoundCloud alternative