After announcing support for select third-party applications inside its Messenger service last week, Facebook on Monday issued a refresh to the mobile messaging app which officially enables third-party integration.
Now available free in the App Store, the update puts a new button in the chat interface of Facebook Messenger. Tapping it brings up a sheet where you can browse and download supported third-party apps that extend Messenger's functionality, like apps for sending and receiving animated GIFs and more.