From Nicolas Kruse :
Nettalk is an 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.Its feature include where it has 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,DCC chat und file trasfer,Unicode by using UTF-8 for chans, nicks and text,sock proxy support,easy configurable text and menu shortcuts,and configurable colors and bag ground picture.
What's new in this version:
Version 6.7.16 has fixed a bug that crashes Nettalk 6.7.15 when pushing Ctr+A .