Sphinx.chat lets you use your lightning node to talk to anyone else who is running lightning and a sphinx compatible chat client.




Fossify Messages is described as 'Fossify Messenger is your trusted messaging companion, designed to enhance your messaging experience in various ways' and is a instant messenger in the social & communications category. There are more than 25 alternatives to Fossify Messages for a variety of platforms, including Android, iPhone, Android Tablet, F-Droid and Web-based apps. The best Fossify Messages alternative is Molly, which is both free and Open Source. Other great apps like Fossify Messages are QUIK, QKSMS, Right Messages and Google Messages.
Sphinx.chat lets you use your lightning node to talk to anyone else who is running lightning and a sphinx compatible chat client.




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+.



A fork of Signal for Android with proprietary Google binary blobs removed. Uses OpenStreetMap for maps and a websocket server connection, instead of Google Maps and Firebase Cloud Messaging.
Partisan-SMS is based on the open-source SMS app QKSMS. P-SMS encrypts SMS messages to allow for peaceful protesters to communicate without authoritarian regimes being able to spy on them.



TeleGuard is the data-secure messenger from Swisscows. TeleGuard encrypts every message and all telephone calls with encryption algorithm currently available: SALSA 20. TeleGuard servers are located in Switzerland, they are not subject to the data protection laws of the EU /...



An open-source application that allows you to copy OTP and codes from SMS and notifications automatically by reading all of your notifications.



Access messages everywhere Whether you are working at your computer, reading on your tablet, or watching the game on your TV. Pulse is with you everywhere, so you never miss a message.




Converse is a messaging app for decentralized, secure, end-to-end encrypted conversations. Built on the XMTP network, Converse lets you own your conversations and take them anywhere whenever you want, ensuring your most important messages—the ones you never want to lose or be...



This Android app allows you to synchronize your SMS messages to a remote Nextcloud instance where you can read and backup them. It also allows you to restore your SMS messages to your Android phone.

Smoke Messenger is an open-source Instant Messenger that is known as the first mobile Messenger worlwide using the encryption algorithm McEliece. To be downloaded at F-Droid.org or Github.com. Smoke provides with its own Server-Software: SmokeStack-Echo-Server.



At this point in the digital world, our personal digital metadata – not just our messages, but data about who talks to whom, when, and where – has been marketed, auctioned, and monetized hundreds of thousands of times over.


