Cost / License
- Free
- Proprietary
Application types
Platforms
- Mac
- iPhone
- iPad
- Apple Watch




Adamant Messenger is described as 'The most secure and anonymous messenger, encrypted with Blockchain' and is a instant messenger in the social & communications category. There are more than 100 alternatives to Adamant Messenger for a variety of platforms, including Android, iPhone, Windows, Mac and iPad apps. The best Adamant Messenger alternative is Signal, which is both free and Open Source. Other great apps like Adamant Messenger are Telegram, Element, Matrix and Tox.




Android keyboard for secure E2EE communication through the signal protocol in any messenger. Communicate securely and independent, regardless of the legal situation or whether messengers use E2EE.




Quantum-resistant encrypted messaging, video/audio calls, and file transfers in the browser with optional registration and no downloads required.







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).










Technitium Mesh is a secure, anonymous, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. Primary aim of developing this instant messenger is to provide privacy which is achieved using cryptography and anonymity using Tor network.

µTox is the lightweight client with minimal dependencies; it not only looks pretty, it runs fast! µTox is available for Windows, OS X, and Linux (Android support is experimental), with full support for chat, file transfers, audio/video calling, and desktop sharing...

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.

TorChat is a peer to peer instant messenger with a completely decentralized design, built on top of Tor's location hidden services, giving you extremely strong anonymity while being very easy to use without the need to install or configure anything.
