Telegram is a cloud-based instant messaging service. Telegram
clients exist for both mobile (Android, iOS, Windows Phone,
Ubuntu Touch) and desktop systems (Windows, OS X, Linux).
Users can send messages and exchange photos, videos, stickers
and files of any type. Telegram also provides optional end-to-end-
encrypted messaging, which has been criticized by security
experts because of its custom nature.
Telegram is supported by the Russian-born entrepreneur Pavel
Durov, who is now a citizen of Saint Kitts and Nevis,
travelling the world in self-imposed exile.Its client-side code is
open-source software, whereas its server-side code is closed-
sourced and proprietary. The service also provides APIs to
independent developers.
Telegram was launched in 2013 by brothers Nikolai and Pavel
Durov, who previously founded the Russian social network VK,
but had to leave the company after it was taken over by Mail.ru. Nikolai Durov created the MTProto protocol that is the basis
for the messenger, while Pavel provided financial support and
infrastructure through his Digital Fortress fund.
Telegram is registered as both an English LLP and an American
LLC.
[20] In September 2015, an
announcement stated that the app had 60 million active users and
delivered 12 billion daily messages. In February 2016, Telegram
announced that they had 100 million monthly active users, with
350,000 new users signing up every day, delivering 15 billion
messages daily.It has estimated 100 million downloads on playstore.
Features
Cloud based messaging which means messages can be accessed on different devices,
Telegram bots,channels,stickers,secret chats etc among others
This app also has a large group membership,up to 5 thousand members allowed in a single telegram group.
What do you think of it,do you think it surpassed whatsapp or can possibly do that in the near future?share your reviews.

BRB!