Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Telegram X - Meet Telegram X for iOS and Android – two new official apps that offer more speed, longer batter life and smooth animations.
Unigram - The Telegram client for the Windows 10 platform, built by the community for the community.
Webogram - Webogram is an unofficial Telegram web app.
Vidogram - Vidogram is a fast and secure messenger based on Telegram with a lot of additional Features
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.