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.
Flex Chat is an Open Source IRC client, which is written in C#. It is comfortable, easy to use and configure client, which is supporting VB, Perl, PHP, Tcl, C#, C++ scripts and XML database.
IRC Services for the Unreal IRC server, written in C#, with a Microsoft SQL Server backend. Files are stored in XML. Services include NickServ, ChanServ, MemoServ, BotServ, HostServ, and OperServ.
SharpBot is a multi-protocol bot that supports multiple protocols (such as OSCAR, IRC, and Jabber). The bot's functionality may be extended by external modules such as scripting modules, plugin modules, and protocol modules.
Aeru IRC is IRC Client for the .NET Framework. It made with C# programming language and features a full Graphical Interface. Aeru IRC uses XML to store servers and channels and app settings. The GUI uses the power of .NET.