Nettalk is a powerful but easy to use free (open source) IRC-client for Windows. The SMART user interface is based on Windows standards, so it is easy to get used to it. The following languages for the interface are available: English, Dutch, Russian, Chinese, Magyar and German.
Features:
-Comfortable management of many IRC-connections
-Automatic command completion
-Automatic syntax completion
-Automatic nick completion
-Text de/encryption
-Spelling check
-Script support (with Basic-syntax)
-Plug-in support
-On Screen displaying of messages (e.g. in games)
-Displaying of messages during working in Windows.
-Automatic storing of connections and there properties including opened channels
-strong DCC chat und file trasfer
-Unicode by using UTF-8 for chans, nicks and text
-Sock Proxy support
-Easy configurable text and menu shortcuts
-Configurable colors and bag ground picture
-And much more...