Konversation is an IRC client which gives you speedy access to Freenode network's channels, where you will find support for most distributions.

HexChat is described as 'IRC client based on XChat for Linux , but unlike XChat it’s completely free for both Windows and Unix-like systems' and is a very popular IRC Client in the social & communications category. There are more than 50 alternatives to HexChat for a variety of platforms, including Linux, Windows, Mac, Self-Hosted and Web-based apps. The best HexChat alternative is Pidgin, which is both free and Open Source. Other great apps like HexChat are SeaMonkey, Adium, WeeChat and mIRC.
Konversation is an IRC client which gives you speedy access to Freenode network's channels, where you will find support for most distributions.

IRCCloud is an IRC client with a future. Stay connected, chat from anywhere, and never miss a message.




IRCCloud is the most popular Android & iPhone alternative to HexChat.
XChat is an IRC chat program for both Linux (Open Source) and Windows (Shareware, 30-day trial). It allows you to join multiple IRC channels (chat rooms) at the same time, talk publicly, private one-on-one conversations etc. Even file transfers are possible.



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...






LimeChat is an IRC client for Windows, Mac OS X and iOS.
Features
Can connect to multiple servers in a window By key operation was rich, achieve a sense of comfortable operation Customization capabilities over the details Stable operation at light Search and comfortable log in.




LimeChat is the most popular iPad alternative to HexChat.
ScrollZ is an advanced IRC client based on ircII. It incorporates many useful features found in all sorts of scripts. The main difference between these scripts and ScrollZ is the code - whereas ircII scripts take a lot of disk and memory space and run slow, ScrollZ only takes a...


Traditionally, chat clients on the Mac have been anything but glamorous. Colloquy is an advanced IRC, SILC & ICB client which aims to fill this void. By adhering to Mac OS X interface conventions, Colloquy has the look and feel of a quality Mac application.



Textual is the world's most popular application for interacting with Internet Relay Chat (IRC) chatrooms on macOS.




ChatZilla is a clean, easy to use and highly extensible Internet Relay Chat (IRC) client, built on the Mozilla platform, which provides all the usual features: multiple servers, a built-in list of standard networks, easy searching and sorting of available channels, logging, and...


HydraIRC is an open-source IRC client with an attractive and easy to use interface. It supports DCC Chat and File transfers, Connecting to multiple servers, Dockable Floating Tabbed Windows, Autohiding Windows, DLL Plugins, Channel Monitoring, Message Logs, Event Viewer, Themes...

If you have a Mac, Textual is the best IRC experience you can get, hands down. The UI is extremely polished and beautiful, and the program is perfectly stable and rock-solid.