Twitter, Inc. is a global platform for public self-expression and conversation in real time. It provides various products for users, including Twitter that allows users to express themselves and create, distribute, and discover content; Vine, a mobile application available on the iOS and Android operating systems that enable users to create and distribute short looping videos; and #Music, a mobile application that helps users discover new music and artists based on Tweets. The company also provides a set of development tools, public application programming interfaces, and embeddable widgets that developers can use to contribute their content to its platform; distribute Twitter content across their properties; and enhance their Websites and applications with Twitter content. In addition, Twitter, Inc. offers promoted products comprising promoted Tweets, promoted accounts, and promoted trends for advertisers; and provides subscription access to its data feed for data partners. The company has operations worldwide. Twitter, Inc. has strategic partnerships with Comcast Corporation and NBCUniversal. The company was founded in 2006 and is headquartered in San Francisco, California.