Webogram - Webogram is an unofficial Telegram web app.
FluffyChat - Open. Nonprofit. Cute ?
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Unigram - The Telegram client for the Windows 10 platform, built by the community for the community.
Molly (Signal fork) - Molly is an independent Signal fork for Android