Telegram provides end-to-end encryption in voice and video calls, and in optional private chats, which Telegram calls Secret Chats. It is available for Android, iOS, Windows, macOS, Linux, and web browsers. It allows users to exchange messages, share media and files, live location and hold private and group voice or video calls, as well public livestreams. Telegram Messenger, commonly known as Telegram, is an encrypted, cloud-based, cross-platform instant messaging (IM) service.