Open Source C# Chat 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.

DiscordChatExporter is a cross-platform utility that allows users to export Discord chat histories into structured files for archival, analysis, or backup purposes. The tool connects to Discord accounts and retrieves message history from servers, channels, or direct messages, then converts the data into formats such as HTML or JSON. It is designed to preserve message structure, timestamps, attachments, and formatting so exported conversations remain easy to navigate and review. The project is widely used for moderation audits, research, community archiving, and personal record keeping. With both command-line and GUI usage patterns available through the ecosystem, it supports automation as well as manual workflows. Overall, DiscordChatExporter provides a reliable way to extract and preserve Discord communications outside the platform.

HunterPie is a modern overlay application for Monster Hunter games that gives players real-time information during hunts. It was rewritten from scratch for its v2 generation while keeping the same focus on a clean, powerful, and easy-to-use experience. The overlay can show hunting data through modules, plugins, widgets, and customizable interface elements. It is useful for players who want clearer visibility into damage, monster data, party performance, and other hunt-related context. The project is built as a desktop application and requires the .NET Desktop Runtime. HunterPie is best understood as an extensible companion tool for Monster Hunter players who want more feedback and personalization than the base game interface provides.

RevokeMsgPatcher is a reverse engineering patch tool for Chinese messaging apps QQ and TIM. It prevents message recall (revocation) by modifying the app’s behavior to retain recalled messages, allowing users to see messages that would otherwise be deleted. Primarily used in Windows environments, the tool is popular among users who prefer transparency in their chats.

Driver support for 3D Controller Hardware. We hope to support SDL Input, DirectInput, and other major controller API's including game consoles and embedded systems.

OfficeSIP Softphone and Messenger are two enterprise VoIP SIP clients written in C# in .NET Framework. The SIP clients make use of Microsoft UCC API SDK, ensuring the highest quality of audio and video. Compatible with Office Communications Server. See also open source, cross-platform: 1) simple messenger Brief Msg at http://briefmsg.org 2) MUVConf is a multi-user video conferencing, see demo video http://youtu.be/YrBU-Aqtvrk, download https://code.google.com/p/muvconf/downloads/list

THIS LIBRARY IS NOT UNDER ACTIVE DEVELOPMENT (sorry). AIMLBot (Program#) is a small, fast, standards-compliant yet easily customizable .NET dll implementation of an AIML (Artificial Intelligence Markup Language) based chatter bot. AIMLBot has been tested on both Microsoft's runtime environment and Mono.

Yammy (Yahoo Messenger Archive Decoder) allows you to decode and view not only yours but, also other stored YM conversations. You don't even need a password!

A C#.Net IRCd that uses the TOR network in a distributed manner, connecting any IRC client via the TOR network to other TOR-IRCd instances. IRC clients connected to the local IRCd sees other IRC Proxyed clients.

This is an IRC dice bot. This bot supports crypto-seeded random rolls of multi-sided dice. This bot logs onto an IRC server and awaits input by players. DiceBot includes support for roll multipliers (5d20) and roll modifiers (1d20 + 1d1547 - 5 * 2 / 4).

IceChat is an IRC (Internet Relay Chat) Client created in C# .Net 3.5/Mono. Website is at www.icechat.net. It is meant to work as a cross-platform friendly irc client with the Mono Framework.

IrChat is an Irc Client written in C#. It supports Vb.Net/C#-written and custom scripting. Ssl connection suported, french and english langague available. Many things configurables such as messages, servers, ctcp and dcc.

SecureTEL is a peer-to-peer internet phone/chat/file sharing program working over a secure AES-encrypted connection and using a pair of X509 certificates for authentication

C# IRC Client Add-in (addon) for Visual Studio .NET 2002 and 2003. Helps you communicate with your team during programming.

View who is in TeamSpeak without even logging in. Shows details such as what channel there in, there name, there ping, and there status. More info: http://forum.goteamspeak.com/showthread.php?t=32299

#aim (pronounced "shame") is a multi-protocol instant messaging client written in C#

BF2AutoLoader (BF2AL) is a free, no ad/spyware, GameSpy/ASE/XFire servers browser alternative for Battlefield 2.

Dunbar is a location-based chat tool for mobile devices and phones as well as desktop computers. The architecture is built on web services so that clients on any operating system can be created. The service will be free to users, and the source code will

Garuda Messenger is Chat service client. written in C#.NET , This software aims to give unmatched customizability to both developers and end users. presently a GTalk Client(XMPP client).modular design allows for flexible modifications of softwar

Instant messenger chat, è una chat client-server multiutente molto semplice da usare e con grafica molto carina.Sviluppata interamente in c#.

The project is a GUI implementation of an IRC client. The client will be based on the thresher project. The Application will support both regular IRC & web chat servers using Adapters. At start, the UI will be in Hebrew.

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.

Simple IRC client for Pocket PC and Smart Phone devices (powered by Windows CE). User Interface application and reusable IRC client library.

Professional IRC client for everyone. If you find someone error in the client can be report here: https://www.facebook.com/nexusnetwork.pw or here https://twitter.com/_Nexusnetwork_ If you have an idea what to do should plugin then to the above of addresses you can write. ---------------------------------------------------------------- Professzionális IRC kliens mindenki számára. Ha talál valaki hibát a kliensben akkor itt lehet jelenteni: https://www.facebook.com/nexusnetwork.pw vagy itt https://twitter.com/_Nexusnetwork_ Ha van ötleted milyen bővítményt kellene csinálni akkor a fenti címeken lehet írni. (Magyar nyelvet akkor lehet kiválasztani,ha első indítás után újra indítod a klienst. Megjegyzés: magyar nyelv még nem teljes)

SharpDrop is a C# Windows IRC Bot meant to monitor channels and perform plenty of channel management tasks automatically. SharpDrop is configured via XML and is controlled mainly through plugins written in any .NET language.