Signal is a messaging app with an unexpected focus on privacy, combined with all the features expected from a modern IM app. Signal has received a lot of praise from all around the world for its security and privacy-respecting technologies.
Telegram is a messaging app created by former VK creators with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful.
QKSMS brings a refreshingly beautiful and responsive Material Design touch to the stale state of text messaging.Discontinued
Appears to be abandoned; the developer hasn't updated it since October '21. Recent Android updates break this app on some devices.
An alternative Telegram client based on TDLib, with higher speed, slicker animations and experimental features.
FluffyChat is an open, nonprofit and cute matrix messenger app for Ubuntu Touch, Android and iOS.
Chat, browse and transact securely in an open source community committed to bringing the power of Ethereum and a more distributed internet to your pocket.
Wickr is a free end-to-end encrypted text, video, picture and voice messenger with full sender control.
Wickr will not accept user registrations for Wickr Me after December 31, 2022, and will discontinue Wickr Me on December 31, 2023.
A great way to stay in touch with your relatives, by sending both SMS and MMS messages. The app properly handles group messaging too, just like blocking numbers from Android 7+.