1. mIRC Ver 7.19 (Basic) for Windows
mIRC is a popular Internet Relay Chat client used by individuals and organizations to communicate, share, play and work with each other on IRC networks around the world. Serving the Internet community for over two decades, mIRC has evolved into a powerful, reliable and fun piece of technology. You can learn about mIRC here. Author = Khaled Mardam-Bey Released = 28 February 1995 Type = IRC Client
AdiIRC requires Microsofts .NET 4.5 Runtime or higher installed which should already be installed if you are running Windows 7+, in case it isn't, it can be downloaded from here. AdiIRC installation will also install it for you if necessary. AdiIRC works in Windows XP/2003/2012/Vista/7/8/10. AdiIRC is freeware and not open source.
Type = IRC Client
3. Peace and Protection Ver 4.22.8 Full Script
Out of all mIRC scripts, Peace and Protection is undefeated in style and substance. The author released PnP 4.22 back in February 2002. It's contains some 30.000 lines of code and covers most inbuilt mIRC identifiers and aliases. Whereas other scripts are no longer working (due to relying on dlls that no longer work with newer mIRC versions), PnP continues to shine as everything is written in mSL. PnP is designed to be a good choice for anyone looking for a mIRC script. All of its features are highly configurable, so you don't need to settle for what someone else thinks is best.