Sphinx.chat lets you use your lightning node to talk to anyone else who is running lightning and a sphinx compatible chat client.
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone




Berty is described as 'Secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network. Berty is a privacy-first messaging application built on top of the Berty Protocol' and is a instant messenger in the social & communications category. There are more than 50 alternatives to Berty for a variety of platforms, including Linux, Android, Windows, Mac and iPhone apps. The best Berty alternative is Signal, which is both free and Open Source. Other great apps like Berty are Matrix, Stoat Chat, bitchat and Tox.
Sphinx.chat lets you use your lightning node to talk to anyone else who is running lightning and a sphinx compatible chat client.




White Noise aims to be the most secure private chat app on Nostr, with a focus on privacy and security. Under the hood, it uses the Messaging Layer Security (MLS) protocol to manage group communications in a highly secure way.



Radar is a private messenger with built-in Bitcoin payments over the Lightning Network. It is a fork of Signal and keeps Signal's end-to-end encryption. Radar is an independent project and is not affiliated with or endorsed by Signal Messenger, LLC.

VeilidChat is a 1-to-1, person-to-person text only chat application which serves as a technology demonstration for the Veilid application development framework. All communication is end to end encrypted, authenticated, private routed, and peer-to-peer. It's currently in early beta.



Integrating Bridgefy allows mobile devices to communicate in a secure and efficient way across large distances, without having them depend on access to a Wi-Fi network or a data plan.



nospeak is a decentralized Nostr chat client for secure, private messaging. It is easy to use but has state of the art end-to-end encryption without metadata leakage.



Tinfoil Chat (TFC) is a FOSS+FHD peer-to-peer messaging system that relies on high assurance hardware architecture to protect users from passive collection, MITM attacks and most importantly, remote key exfiltration.
Ricochet Refresh is the new updated version of Ricochet, supported by Blueprint for Free Speech.. We are a non-government, not-for-profit organisation working to safeguard the freedom of expression for whistleblowers, activists, and everybody else, worldwide.



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.



Secure messenger that protects against NSO Group (Pegasus) & Cytrox (Predator) from exploiting your iOS device via "zero-click" exploit chains. These exploits are easily delivered via other messaging apps like iMessage, Signal, WhatsApp, etc. Protection for those at the highest risk.



Conduit is a simple, fast and reliable chat server powered by Matrix. Conduit is an alternative to Synapse and tries to be lightweight and easy to install, but it is still in development.



