Sugarcube
One of the best alternatives to Telegram, especially for those that dislike Telegram.
Signal has now become my favorite encrypted messaging app for its simplicity and directness without all the annoying, over-the-top, and ultimately futile features that other encrypted messaging apps (e.g., Telegram and WhatsApp) has. Even though I only communicate with three people on the app, I grew fond of their service and have started donating whenever I can.



