Open Source Windows XMPP Software

See https://pidgin.im/about/ for more information. Pidgin is an instant messaging program which lets you log in to accounts on multiple chat networks simultaneously. It runs on Windows, Linux, and other UNIX operating systems. Pidgin is compatible with the following chat networks out of the box: AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, MXit, Novell GroupWise Messenger, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. It is written in C and makes heavy use of GLib and GTK+. Finch is a command line instant messaging program. It also lets you log in to accounts on multiple chat network simultaneously, and it is compatible with the same chat networks as Pidgin. It is written in C and makes heavy use of GLib and ncurses.

Psi is cross-platform powerful XMPP client designed for experienced users. There are builds available for MS Windows, GNU/Linux and macOS.

Psi is a cross-platform powerful XMPP client designed for experienced users. Psi+ is a development branch of Psi XMPP client. Previously is was a sort of fork but now just consider it as a space for nightly builds.

climm is a portable, small, yet powerful console based, fully internationalized instant messaging client supporting the current v8 ICQ protocol and XMPP.

Miranda NG is a successor of a popular multi-protocol instant messaging client for Windows, Miranda IM. Very light on system resources and extremely fast. Supports Em-LAN Facebook, Gadu-Gadu, ICQ / MRA, IRC Internet Relay Chat, Jabber XMPP, MinecraftDynmap, Omegle, Sametime, SkypeWeb, Steam, Tox, Twitter, and VKontakte. Linux is not a natively supported operating system, but Miranda is known to run on Linux under Wine. PluginUpdater is responsible for keeping your Miranda up-to-date. It checks for updates for all installed plugins and other components like icon sets and langpack regularly (depending on its settings) and performs updating automatically.

Pandion is an open source instant messaging client for XMPP networks. Keep in touch with friends or collaborate with colleagues using Pandion instant messenger. Pandion is designed for ease of use and secure communication.

a jabber (instant messaging) client running atop emacs.

A fork of pidgin which aims to provide minor features that have not been addressed by the pidgin development team (including manual textbox resizing). See funpidgin.sf.net for details.

This plugin is a wrapper to hosted AI Inference server for LLM chat models. It uses the Botz API to create a chatbot in Openfire which will engage in XMPP chat and groupchat conversations.

Plugin for Pidgin messenger that saves your opened conversations at shutdown and restores its at startup.

RetroMessenger is an Instant Messenger with a minimal GUI interface to the libretroshare library, in order to have a standalone Instant Chat Messenger. It will be developed using wxwidgets (additional: XUL, Qt) GUI toolkit. http://retromessenger.sf.net

Spark plugin for integratión with CentricCRM. This plugin for Spark XMPP client complements the integration between Asterisk PBX, Centric CRM and XMPP Server. Automatically open session on Centric CRM and redirect to contact the page

Open Enterprise is a very ambitious project that comprise some full opensource components to provide a strong alternative to the existing commercial software. Open Enterprise is cross-platform: Windows / MacOSX / Linux / BSD / Solaris / Unix.

Jabba is a Jabber client wrote in java/

JabberMixClient is a IM Jabber client for portable devices, based on J2ME;JMC implements all the features of an IM client: contacts/presence management, single/multi user chat, users search, services discovery, GTalk and MSN transport.With 2 gui versions

Small tool to mange your Jabber roster like importing nicknames from Trillian and ICQ2000b. Developed completely in school while "Anwendungsentwicklung" at the RBB.

Send XMPP (Gtalk/Google Talk also supported) messages (thanks to Jabber) within a single line of PL/SQL code, get buddies list and status in relational tables (or xml) on Oracle 11g.

This is a less intrusive ajax web chat which uses Ajax, Smack, XMPP. This is the client version Servlet. The backend code should run under Tomcat server. You can use openfire or any other XMPP server as the server, gtalk also.

Akila’ize GChat IM is a free Instant Massager Chat client like Gtalk, Yahoo Messenger and IBM SameTime for Windows. Akila’ize GChat IM allows you to converse with your friends in Akila’ize Language. It is an alternative to Google Talk. Start sending messages in Akila’ize Language to your Google talk/Gmail friends and have fun Speaks out your conversation (Text to speech conversion – Enable/Disable anytime) Simple and Lite weight application

A realtime collaborative mind-mapping project. AmoebaChat allows the user to send and receive chat-style messages in an interconnected graph. This allows for a new way of communicating between parties that hasn't been explored yet.

Audible Alerts is a Pidgin (libpurple) plugin to produce notification of an IM audibly. It uses eSpeak, a text-to-speech program, to call out the name of the buddy who IMs you. You can download eSpeak from www.sourceforge.net/projects/espeak

Boltun is a chat bot plugin for Miranda IM with its own engine.

ButiFree is a project to develop a catalan card game online (called "La botifarra").

This is a xmpp server based on OSGi

It is an instant messaging client. Crony IM has support for some commonly used instant messaging protocols, allowing the user to log into various different services from one application. like LAN, GTalk, Yahoo, Facebook.