Open Source C# XMPP Software for Windows

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.

Simple, but powerfull Jabber communicator written in C#

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.

A Jabber client written in C# using the .NET Compact Framework for use on Windows PCs and Windows Mobile PDAs. It is intended primarily to be deployed in a corporate environment where restricting the actions of users is desired.

Jabberace project aims to implement an full-featured XMPP/Jabber server. It will also provide reusable libraries/components to develop XMPP/Jabber server and client applications.

Spider IM is (will be) a GTK+ based Jabber/XMPP client written in C# (Mono).

TomoSearch is a new generation search tool developed based on the idea of Collaborative Search. Sometime it is also called Search 2.0. We try to make a Collaborative Search engine better than now exist CSEs system to fill the real need of users.

XMPP Instant Messaging Agent or XIMA is an AI Soft Bot with Instant Messaging Capabilities. It Requires .net fraemwork 3.5. Use your Gmail for login. and watch ur frnds chat with a computer.

"eXcellent Messenger for Google" is a chat client designed as an alternative for GTalk. This client however uses the famous "Jabber" protocol (XMPP nowadays) for communications and it has the capability to connect to any XMPP compliant chat network.

btTalk is an IM program for mobile platforms which wants to transform the common IM programs into small nets based in bluetooth(r) technology, also being available for the user to transfer files from one phone to other.

Julia (Jabber User-Level Interface Application) is a Jabber client. The aim of the project is to create a client with MSN-like features (games, animated icons...). Jabber is developed to be cross-platform, and it runs under Mono.

nerdChat is a secure Jabber-Chat-Client for Windows console.