ChatSecure is a free and open source encrypted chat client for iOS that supports OTR and OMEMO encryption over XMPP.

Web-based XMPP/Jabber chat written in JavaScript

Modern XMPP ("Jabber") Chat Client using GTK/Vala

XEP-0384: OMEMO Encryption for libpurple.

(M) XMPP client for macOS based on TigaseSwift XMPP library

(M) Public Project of Tigase Messenger for iOS devices based on Tigase Swift XMPP library.

The | state-of-the-art | secure-by-default | one-touch-deployed | XMPP server for everyone.

A WIP secure XMPP client for UWP (Windows 10) devices.

Gajim plugin for OMEMO Multi-End Message and Object Encryption

An experiment in building a better XMPP client. This time using Flutter (mirror)

(M) Android XMPP Client

Officially supported Psi plugins

Tracking the Progress of OMEMO Integration in various clients

Implements OMEMO in C.

Codebase snapshots for Psi+ project

OMEMO Xtra for Adium (packaging the lurch and carbons libpurple plugins)

A Dart implementation of the cryptography needed for OMEMO 0.8.3 (mirror)

A modular and portable open source XMPP client library written in Java for Android and Java (SE) VMs

Desktop Jabber/XMPP client based on Converse.js and Electron

OnionComms is a repository of script to run an onion server and guides to configure client side applications to connect to any onion service that uses the same protocol, therefore, onion communications.