It’s a free and open source software that offers a complete method of connecting through IRC networks on major platforms including Windows. X-Chat is a user-friendly IRC client offering some good features that has been among the early competitors of mIRC. Best of all, it features detailed documentation and is translated to multiple langugaes.
What’s more? You can even connect to your WeeChat software through Android, your browser, or even Emacs creating remote interfaces. Moreover, it supports 8 scripting languages with an integrated scripts manager. With a wide range of colors (256), smart filtering options, configurable bars, and more, it includes a range of such unique features. It’s a fully featured IRC plugin that features DCC, IPv6, multiple servers, nicklist, SASL verification, proxy support, and a lot more. WeeChat is a speedy, lightweight, and an extensible chat client that deserve to be in the top list due to its power-packed features. Price: free 30-days trial available upgrade starts from $20 for single user license. The software also features a robust scripting language that’s proves useful for both automatic mIRC and to develop applications capable of running a wide variety of functions like playing games, or network communications.