Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad




Tox is described as 'With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with friends and loved ones without anyone else listening in' and is a leading instant messenger in the social & communications category. There are more than 100 alternatives to Tox for a variety of platforms, including Android, Windows, iPhone, Linux and Mac apps. The best Tox alternative is Signal, which is both free and Open Source. Other great apps like Tox are Element, Telegram, Jami and Mumble.




The preservation of privacy is the main driver for this project. Secure technologies, such as WebRTC, are used to establish a direct connection between the participants. The website that provides the web application and mediates the communication stores as little data as...


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



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




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...

Element Pro is a secure enterprise communication app built on the Matrix protocol, designed for organizations that need encrypted, compliant, and fully controlled collaboration. It combines real-time messaging, voice and video calls, and file sharing with strong administrative...




Skred is the first secure peer-to-peer instant messaging app - No need for an email address or phone number to use it.
Skred is free, without subscription, without a provider, without a SIM card, and without leaving a trace.




Utopia P2P Ecosystem. Utopia is a feature-rich platform that is specifically designed to protect privacy of communication, confidentiality, and security of personal data. Utopia is a decentralized network, with no central server involved in data transmission or storage.




Vector encompasses the ideals of freedom through free and open-source technology, using a "Privacy by Principle" approach. This means that privacy is not a feature or add-on, but the core foundation that Vector is built upon, which is granted and accessible to everyone.
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 /...




Off-the-Record (OTR) Messaging allows you to have private conversations over any instant messaging (MSN,Gtalk, Facebook and so on) by providing encryption, authentication, deniability, perfect forward...
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.

Just a mechanism for encryption, and as such part of or plugin for other chat tools (for instance, Pidgin and Adium).