Pidgin
Open Source
Pidgin is a free and open-source chat client which supports AIM, Google Talk, ICQ, XMPP protocols.
Quassel IRC
Open Source
Quassel IRC, or Quassel, is a graphical, distributed, cross-platform IRC client.
KVIrc
Open Source
KVIrc is a graphical IRC client for Linux, Unix, Mac OS and Windows.
WeeChat
Open Source
WeeChat is a free and open-source Internet Relay Chat client, which is designed to be light and fast.
ZNC
Open Source
ZNC is an advanced IRC bouncer that is left connected so an IRC client can disconnect/reconnect without losing the chat session.
Textual
Commercial
Textual is an IRC client created specifically for macOS.
irssi
Open Source
Irssi is an IRC client program for Linux, FreeBSD, Mac OS X and Microsoft Windows.
Colloquy
Open Source
Colloquy is a platform on loyalty, customer engagement and data analytics.
Smuxi
Open Source
Smuxi is a cross-platform IRC client for the GNOME desktop inspired by Irssi.
AdiIRC
Free
AdiIRC is a free Internet Relay Chat (IRC) client.
Chatzilla
Open Source
ChatZilla is an IRC client for Mozilla-based browsers such as Firefox.
LimeChat
Open Source
LimeChat is an IRC client for Mac OS X.
