Comparison of Internet Relay Chat daemons

The following tables compare general and technical data. This article does not have current or all the data available.
Obsolete Servers.
The following servers are no longer maintained, but basic details are maintained for posterity. They will not be listed in feature comparison tables.
Operating system support.
The operating systems that the daemon is compatible with.
Technology.
Various networking and IRC technology used to date.
Features.
IRC server features, mostly extensions to . Probably also implementations of , , , , and possibly IRCX.