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.
Plus Messenger - Free Android Messenger that uses Telegrams API.
Unigram - The Telegram client for the Windows 10 platform, built by the community for the community.
Webogram - Webogram is an unofficial Telegram web app.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.