Facebook is a social-network service website launched on February 4, 2004, by Mark Zuckerberg. The following is a list of software and technology features that can be found on the Facebook website and mobile app and are available to users of the social media site. Facebook structure. News Feed. The news feed is the primary system through which users are exposed to content posted on the network. https://en.wikipedia.org/wiki/List_of_Facebook_features