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.

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 is a funcional application for Windows for your Telegram Bot. To create your own bot you must register new bot by BotFather bot in Telegram. BotFather will give you unique Autch code that will be used in this application.

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!

Download files of the Telegram channels or groups you are a member of.

ThinLisp is a practical dialect of lisp for real world applications. You develop in Common Lisp, you deploy in C. ThinLisp programs are as fast as C, by design. Used for a decade in million line systems.

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.

YTalk Cursor Freedom (YCF) is a small C# app that you can run inside of YTalk which provides an extended feature set for YTalk such as the ability to use the arrow keys.

NOTE! xg moved to github, no mor updates are published to sourceforge! see you @ http://github.com/lformella/xdcc-grabscher

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

Windows 11/10 taskbar area application that allows toggle of any desktop window "Always On Top" state. For example keep Messenger always on top of other windows or any other application that you'd like to always have visible.

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

Icq# is a .NET implementation of the OSCAR/ICQ protocol specifications.

Kubeah Chat is an open source local chat. It does not use a server and is easy to use. Download, launch, connect and chat!

LiveSupportChat is an open source simple online support chat demo application. It has used ASP.Net web form (C#) and SignalR. Testing Instruction : 1. Run the application 2. Open OperatorLogin.aspx 3. Click 'Operator Login And Go To Support Online' button. 4. Open OnlineSupport.aspx in other browser to simulate user (if operator browser is IE then this should be Chrome or Firefox) 5. Now try sending message as both user and operator from their respective browser

A small (ish) messaging server for small businesses and other things like LAN parties or whatever you want to use it for. It has two components, the client and server. The clients can connect to servers and use that as a hub to communicate between each other. The admin running the server can also kick and ban people if they wish to. It also has peer to peer file transfer that currently has no size limit. Can't really explain all the features here, I'm running out of characters. Go look down below for all of the features or download it to see them for yourself!

ncLog is the only tool to save the information in the console(.log) (=chat and system messages) not only permanently, but also in a structured way, so you can examine your daily achievements (such as your daily income/spendings).

This is a online chat program that requires no email address, no registration and no personal information. You can chat with all users that is using this program, if you have their username. How to use: Enter an username into the first textbox and then click connect. Then type is the username of the person you want to send a message, type in the message and click send. ----------------------------------------------------------------- This program is a BJCustomSoft product and is written in CSharp. Credits to Andriy Mykhaylyu who is the developer on ImapX llibrary.

SimpleIrc is a simple & complete implementation of the Irc protocol. SimpleIrc is written in C#, for the .NET environment. It is mainly intended for 3rd party developers so they can create their own Irc clients, in an easy and fast way.

A light-weight yet feature-rich Second Life chat client.

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

umsn (micro msn) is a lightweight MSN client for who don't have a fast computer or don't want install a big pack microsoft's client or other multi-IM client. The only requirement is framework .NET 2.0

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