Facebook Messenger is a messaging platform developed by Facebook that allows users to send text messages, voice messages, and make voice and video calls. It is integrated with the Facebook social network, enabling seamless communication with friends and family. In addition to one-on-one chats, Facebook Messenger supports group conversations, multimedia sharing, and various interactive features like games and chatbots. With its user-friendly interface and extensive functionality, it has become one of the most popular messaging apps worldwide, connecting millions of users every day.