Telegram messenger is a voice over IP and instant messaging service and its a cloud-based social network. there are many third-party apps working on telegram API like telegram x, plus messenger, best gram, etc.
all messages whether its a voice, audio, document or text are encrypted and are stored on telegram servers.
it was launched in 2013 by two entrepreneur brothers Nikolai and Pavel durov , earlier they also launched VK social network.
telegram is currently structured as a nonprofit organization also telegrams client-side code is open source.
telegram messenger was created with aim to provide speed and security to users.
there are multiple reasons that will make you switch to telegram messenger, some of them are provided below
why telegram messenger?
why telegram messenger? 
What can you do with Telegram?
