XChat.org - (Open Source)
Join multiple IRC channels at the same time and chat live with hundreds of online, publicly or privately friends with XChat.
XChat is an IRC chat program that allows to join multiple groups simultaneously, in public or in private conversations. The application module also includes a file transfer. Simply enter the username, indicate the network and the channels desired to integrate.
Xchat is well-known thanks to its compatibility with most operating systems IRC client. The standard options, such as server selection, colors, menus with basic commands, etc all are present. In addition, it has nice features like the ability to connect to multiple servers (multiserver).
The user can also easily edit most menus to customize the chat room. The software is available for most operating systems. The tool is lightweight, comfortable to use and can be used in graphical mode as in console mode. It is no longer necessary to install the GTK + Runtime Environment library for Windows users.
* The userlist and treeview can now be placed on the same side, with a resize handle in between them. They can also be dragged and dropped into place.
* The resize handles between two panes are now smaller (3 pixels) and invisible.
* Scrollbars are now placed inside the frame they scroll (more Windows like).
* If you have a tree on one side and userlist on the other, they'll both now have a resize handle, previously the tree's size was fixed.
* The userlist can be hidden and shown with CTRL+F7.
* Added a feature that reloads conversations from last time you used XChat (/set text_replay 0 to disable it).
* /MENU now supports a $CHAN root aswell (see plugin20.html).
* Fixed a problem some people were having with minimize to tray (the feature added in 2.8.3e).
* Fixed /LastLog printing everything twice if you had Indented Nicks off.
* Added /set gui_tweaks for GUI fine tunning.
* A better quit dialog which warns you if you're connected to IRC or have active file transfers.
* The Channel List's minimum users spin-button can now be set downward even on networks that sent a list of channels of only a larger size. In this case the Download button will flash to indicate you need to download a new list.
* Fixed bug: [1737249] Doesn't recognize nicks with halfop mode on hovering.