Matrix

Matrix channel: https://matrix.to/#/#theanarchistlibrary:riot.anarchyplanet.org (it's bridged with the IRC channel)

IRC (Internet Relay Chat)

webchat: https://irc.anarchyplanet.org/#library

or point your preferred IRC client towards the server and port listed below (regular, SSL, and via Tor):

server: irc.anarchyplanet.org

channel: #library

port: 6697 (enable SSL)

Tor: i2b23rgkhpfcwyi5v7yyaeyhcarbqxxdm76ommzpno6245aufja5arqd.onion