DevDocs References
Commands
Our Command reference includes information on the commands you can use on IRC servers.
Numerics
Our Numeric reference includes information on the format of numerics sent by servers, and how to interpret them.
Glossary
Our Glossary includes definitions for terms used in the IRC development and user community.
Other References
IRCv3 Working Group
The IRCv3 Working Group aims to improve and extend the IRC Client Protocol, and their specification documents are good reading for any IRC developer.
ircdocs
The ircdocs references include additional information on many IRC subjects, as well as linking to other community documents and reference material.