Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
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.
TogetherTube - to watch videos with other people online
Musicolet - Musicolet is a small yet feature-rich offline Music Player for Android.
Syncplay - Syncplay is a different kind of entertainment platform.
Audiomack - The free SoundCloud alternative