irssi is described as 'Irssi is a terminal based IRC client for UNIX systems. It also supports SILC and ICB protocols via plugins' and is a popular IRC Client in the social & communications category. There are more than 50 alternatives to irssi for a variety of platforms, including Linux, Windows, Mac, Self-Hosted and Web-based apps. The best irssi alternative is HexChat, which is both free and Open Source. Other great apps like irssi are SeaMonkey, Adium, WeeChat and mIRC.
jsIRC is written using Socket.IO, node.js, jQuery Title Alert and Sencha ExtJS, relying on string.js, Lo-Dash and PhantomJS.
Subway is a web-based IRC client with a multi-user backend and a JavaScript-heavy UI. Frontend/backend communication is done with websockets (or best available fallback where not available). The backend supports connection persistence and optional logging when the browser...
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, Spanish, Dutch, Russian, Chinese, Hungarian...
leafChat is an IRC client for Windows, Mac OS X, and Linux.
Chat with your friends using popular IRC networks. leafChat has a friendly, clean interface that doesn't get in the way of your conversations. Connect to multiple servers at once on the same screen, so that it'.
wsIrc - the global community communicator, goal is to offer a free web IRC client which should be at the end as good as old standalone application, but yet without requiring any installation, without any update, without any virus risk, and maybe we will offer yet a few...
CGI:IRC is a Perl/CGI program that lets you access IRC from a web browser, it is designed to be flexible and has many uses such as an IRC gateway for an IRC network, a chat-room for a website or to access IRC when stuck behind a restrictive firewall.
Famous IRC client created by Oliver Wagner and Jamie van den Berge for VaporWare. Its look and feel was copied many times and inspired the creation of XChat.
HoloIRC is an open source IRC client for Android 4.0 and up. It is designed to be as simple to use as possible while being extremely small in size and fairly light in resources. It works with IRC bouncers as well as regular servers.
