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

Keybase is described as 'New and free security app for mobile phones and computers. For the geeks among us: it's open source and powered by public-key cryptography' and is a very popular Encrypted Chat app in the security & privacy category. There are more than 50 alternatives to Keybase for a variety of platforms, including Android, Linux, Windows, Mac and iPhone apps. The best Keybase alternative is Signal, which is both free and Open Source. Other great apps like Keybase are Telegram, Element, Tox and WhatsApp.

KeeperChat - The leading secure messaging app.
• Private vault for messages, photos and videos • Private, encrypted media gallery (nothing is saved on device’s camera roll) • Biometric login and self-destruct protection for vault • Message retraction and self-destruct timer • Tw.




Keyoxide allows you to link accounts on various online services and platforms together, prove they belong to you and establish an online identity. This puts you, the internet citizen, in charge when it comes to defining who you are on the internet instead of large corporations.








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.
Smoke Messenger is an open-source Instant Messenger that is known as the first mobile Messenger worlwide using the encryption algorithm McEliece. To be downloaded at F-Droid.org or Github.com. Smoke provides with its own Server-Software: SmokeStack-Echo-Server.




DUST gives you control over your digital life. We believe online life is real life, so only you should control what is known about you. Our users are protected—free from worry of prying eyes, data mining, sketchy hackers, and the paranoia that your words could come back to haunt...








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.








LeggoChat is a group or channel based chat platform that is designed to be easy to set up for any casual, or formal settings and discussions. Users can choose to have their messages logged and stored, or otherwise. No user accounts are required to get started at all.



Keybase isn't primarily a messenger like a lot of people think. It's for secure collaboration. The original functionality is storing, sending, verifying crypto keys and messages, to which keys.pub comes closest. I wish keys.pub would expand into more keybase functionality though. With Zoom acquiring Keybase, we need an alternative.