SILC (Secure Internet Live Conferencing) is a modern and secure conferencing protocol. It provides all the common conferencing services like private messages, instant messages, channels and groups, and video and audio conferencing.

CMP is a C implementation of the MessagePack serialization format.

libsignal-protocol-c is an implementation of a ratcheting forward secrecy protocol that works in synchronous and asynchronous messaging environments. It can be used with messaging software to provide end-to-end encryption.

Psi+ is a powerful XMPP client designed for experienced users. It's a spin-off of the Psi XMPP client.

BitlBee brings IM (instant messaging) to IRC clients, for people who have an IRC client running all the time and don't want to run an additional IM client. BitlBee currently supports XMPP/Jabber (including Google Talk), MSN Messenger, Yahoo! Messenger, AIM and ICQ, and the Twitter microblogging network (plus all other Twitter API compatible services like identi.ca and status.net).

Telegram-purple is a plugin for Libpurple, the communication library used by the Pidgin instant messaging client, that adds support for the Telegram messenger.

This package is on ``life support'' until tdlib-purple is a full replacement.

This package provides Zulip's Flask server for running bots.

This package implements a web-based registration form that validates invite tokens. It also supports guiding the user through client download and configuration via mod_register_apps.

Gajim-OpenPGP is a plugin that adds support for the OpenPGP Encryption to Gajim.

Dino is a chat client for the desktop. It focuses on providing a minimal yet reliable Jabber/XMPP experience and having encryption enabled by default.

ngIRCd is a lightweight Internet Relay Chat (IRC) server for small or private networks. It is easy to configure, can cope with dynamic IP addresses, and supports IPv6, SSL-protected connections, as well as PAM for authentication.

This module implements support for sending messages in a MUC to affiliated users who are not in the room. This is a custom extension by Tigase to allow push notifications from MUCs to users who are not currently connected.

Python-nbxmpp is a Python library that provides a way for Python applications to use the XMPP network. This library was initially a fork of xmpppy.

mtxclient is a C++ library that implements client API for the Matrix protocol. It is built on to of Boost.Asio.

This package provides Ejabberd -- Robust, Ubiquitous and Massively Scalable Messaging Platform. It supports XMPP, MQTT and SIP protocols.

LibGadu is library for handling Gadu-Gadu instant messenger protocol. The library is written in C and aims to be operating system and environment independent.

This module serves common static CSS and Javascript libraries from the filesystem, allowing other HTTP modules to easily reference them.

You can override the filesystem location using the libjs_path configuration option. The default is /usr/share/javascript.

gloox is a full-featured Jabber/XMPP client library, written in ANSI C++. It makes writing spec-compliant clients easy and allows for hassle-free integration of Jabber/XMPP functionality into existing applications.

This module implements support for a Encrypted Push Notifications, a custom extension to XEP-0357: Push Notifications.

This package provides a password policy enforcement

Ytalk is a replacement for the BSD talk program. Its main advantage is the ability to communicate with any arbitrary number of users at once. It supports both talk protocols ("talk" and "ntalk") and can communicate with several different talk daemons at the same time.

Poezio is a free console XMPP client (the protocol on which the Jabber IM network is built). Its goal is to let you connect very easily (no account creation needed) to the network and join various chatrooms, immediately. It tries to look like the most famous IRC clients (weechat, irssi, etc). Many commands are identical and you won't be lost if you already know these clients. Configuration can be made in a configuration file or directly from the client. You'll find the light, fast, geeky and anonymous spirit of IRC while using a powerful, standard and open protocol.

Bitlbee-discord is a plugin for Bitlbee which provides access to servers running the Discord protocol.

This module provides a way to configure a list of XMPP client apps recommended by the current server. This list is used by other modules such as mod_invites_page and mod_invites_register_web.

It also contains the logos of a number of popular XMPP clients, and serves them over HTTP for other modules to reference when serving web pages.