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








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.









Imo is a free, simple,secure and faster international video call & instant messaging app.







Protect your communication in transit and on your phone. Silence (formerly SMSSecure) is a full replacement for the default text messaging application: all messages are encrypted locally and messages to other Silence users are encrypted over the air.



Whatsie is a native Linux desktop wrapper for WhatsApp Web, built on Qt and QtWebEngine. It brings WhatsApp out of the browser tab and into a proper desktop application with system integration, privacy controls, and customization options unavailable in a plain browser.




Plus Messenger is an messaging app that uses Telegram 's API. Plus Messenger has all of Telegram's features plus themes. Plus Messenger is free for android devices.



Kik is way more than just messaging. It’s the easiest way to connect with your friends, stay in the loop, and explore – all through chat. No phone numbers, just pick a username.



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 /...



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


