- Senders send messages stamped with Bitcoin ecash to Nostr relays. The Nostr relays collect the Bitcoin ecash, then deliver messages to receivers.



SimpleX Chat is described as 'Encrypted platform supporting private, identifier-free messaging, group conversations, file sharing, and audio/video calling, using a double-ratchet protocol' and is a very popular instant messenger in the social & communications category. There are more than 50 alternatives to SimpleX Chat for a variety of platforms, including Android, Windows, Mac, iPhone and Linux apps. The best SimpleX Chat alternative is Signal, which is both free and Open Source. Other great apps like SimpleX Chat are Telegram, Element, Tox and WhatsApp.



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.
Gem Space - is news and blogs, chats and calls, business communities and friendly communication with like-minded people. We make sure that all our users feel secure: our chats are encrypted, calls are protected and communication spaces are private or public, as desired.




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.



This simple Matrix client written in Python allows you to send and receive messages and files, verify other devices, and interact with your Matrix account or other Matrix users in many ways. You use it from the terminal (CLI) or integrate it into other simple Python programs.
Antox is an Android client for Tox. It aims to bring the full multimedia support Tox offers to your device, although it's still currently in heavy development.





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.




0xchat is a secure chat app built on the Nostr protocol. It prioritizes security, featuring private key login, encrypted private chats and contacts, encrypted group chats.




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.

Wamoca is a powerful tool designed to help businesses streamline their marketing efforts through WhatsApp. With Wamoca, you can create, manage, and analyze personalized campaigns that drive engagement and conversions.



