qTox - The most feature-rich Tox client; P2P instant messaging, audio and video calls.
Cost / License
- Free
- Open Source (GPL-3.0)
Application types
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux
- BSD
- FreeBSD
- Flathub
- Flatpak


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 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, iPhone, Mac 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.
qTox - The most feature-rich Tox client; P2P instant messaging, audio and video calls.


Bitmessage is a P2P communications protocol used to send encrypted messages to another person or to many subscribers. It is decentralized and trustless, meaning that you need-not inherently trust any entities like root certificate authorities.


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LINE is transforming the way people communicate, closing the distance between family, friends, and loved ones for free.




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


