<Tr> <Th> Alexa rank </Th> <Td> 200 (As of December 2017) </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.messenger.com </Td> </Tr> <P> Facebook Messenger (sometimes abbreviated as Messenger) is an instant messaging service and software application . Originally developed as Facebook Chat in 2008, the company revamped its messaging service in 2010, and subsequently released standalone iOS and Android apps in August 2011 . Over the years, Facebook has released new apps on a variety of different operating systems, launched a dedicated website interface, and separated the messaging functionality from the main Facebook app, requiring users to use the web interface or download one of the standalone apps . </P> <P> Users can send messages and exchange photos, videos, stickers, audio, and files, as well as react to other users' messages and interact with bots . The service also supports voice and video calling . The standalone apps support using multiple accounts, conversations with optional end - to - end encryption, and playing games . </P>

When did the facebook messenger app come out