- Respect others to be respected
- Free to talk and read
- Apologies if you make mistakes
- Leave your ego at the door
Telegram is a cloud-based instant messaging and voice over IP service. Telegram client apps are available for Android, iOS, Windows Phone, Windows NT, macOS and GNU/Linux. Users can send messages and exchange photos, videos, stickers, audio and files of any type.
Telegram's client-side code is open-source software but the source code for recent versions is not always immediately published, whereas its server-side code is closed-source and proprietary. The service also provides APIs to independent developers. In March 2018, Telegram stated that it had 200 million monthly active users.
Default messages and media in Telegram are encrypted when stored on its servers, but can be accessed by the Telegram service provider, who holds the encryption keys. In addition Telegram provides optional end-to-end encrypted "secret" chats between two online users, yet not for groups or channels.