https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/thread/UC453G6PNJISKN3Y3AY65Q36FIW47S5Y/?sort=date
Firrre: free IRC bouncer for FOSS projects - Wikitech-l - lists.wikimedia.org
irc bouncer
https://soju.im/
soju IRC bouncer
sojuircbouncer
https://psybnc.org/
psyBNC - The official homepage! - psyBNC is an easy-to-use, multi-user, permanent IRC-Bouncer with...
psyBNC. This program is useful for people who cannot be on irc all the time. Its used to keep a connection to irc and your irc client.