Ricochet

Anonymous instant messaging for real privacy

Adium

Adium is a free instant messaging application for Mac OS X that can connect to AIM, MSN, Jabber, Yahoo, and more.

Antidote is an iOS client for Tox. It works on both iPhone and iPad.

Bitmessage Wiki

Secure messaging, anywhere

ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.

CoyIM is a safe and secure chat client.

Tox client for SailfishOS. Contribute to krobelus/cyanide development by creating an account on GitHub.

Full featured and easy to use Jabber client

The I2P network provides strong privacy protections for communication over the Internet.

Multiprotocol messenger with Tox and XMPP support.

Open-source video calling and chat platform.

Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once.

Psi is a multi-platform and standards-based instant messaging client available for Windows, Linux, Mac and more.

This is psyced, a scalable multi-protocol multi-casting chat, messaging and social server solution…

RetroShare is a open source cross-platform, private and secure decentralized communication system.

Fast, simple & secure messaging. Privacy that fits in your pocket.

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

TorChat is a peer to peer instant messenger with a completely decentralized design, built on top of…

Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

Toxygen is powerful cross-platform Tox client written in pure Python3.

i2pd (I2P Daemon) is a full-featured C++ implementation of I2P client