Webogram - Webogram is an unofficial Telegram web app.
Telegram X - Meet Telegram X for iOS and Android – two new official apps that offer more speed, longer batter life and smooth animations.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Unigram - The Telegram client for the Windows 10 platform, built by the community for the community.
Plus Messenger - Free Android Messenger that uses Telegrams API.
tg - Command-line interface for http://alternativeto.net/software/telegram/. Uses readline interface.