Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux




Cyph is described as 'Quantum-resistant encrypted messaging, video/audio calls, and file transfers in the browser with optional registration and no downloads required' and is a instant messenger in the security & privacy category. There are more than 25 alternatives to Cyph for a variety of platforms, including Android, iPhone, Windows, Mac and iPad apps. The best Cyph alternative is Signal, which is both free and Open Source. Other great apps like Cyph are Telegram, Element, Tox and WhatsApp.




Status combines a private messenger, secure crypto wallet, and Ethereum Web3 DApp browser into one powerful communication tool. Chat with friends and growing communities. Buy, sell, store, and exchange digital assets.



ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. You can connect to your existing accounts on Facebook or Google, create new accounts on public XMPP servers(including via Tor), or even connect to your own server for extra security.



SchildiChat is a Matrix client based on Element with a more traditional instant messaging experience.









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




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 /...



Fully open source instant messaging server and clients. No proprietary components or non-free dependencies. Backend in pure Go (GPL 3.0), with a command-line administration tool in python + gRPC. Clients for Android, iPhone, and Web - ReactJS (all licensed under Apache 2.0).




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.




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...


