Twitch.tv is a direct streaming and VOD site related to video games. Streamers can share their games with other users and spectators have the opportunity to chat with them. Launched in June 2011, the site is now visited by thousands of people every day.
Twitch is also available as a mobile application on Android and iOS.
WhatsApp is an instant messaging application available on iOS, Android, BlackBerry Windows Phone and Symbian. Founded in 2009, today it is used by more than a billion people around the world.
One of the primary features of WhatsApp is the ability to send free messages to one or several contacts, regardless of the destination country. This requires that users, who want to send or receive messages, have the application.