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Irssi vs Halloy: catalog facts
Irssi	Halloy
Free Free and open source.	Free Free and open source under the GPL-3.0 licence.
macOS, Linux, Command line	Windows, macOS, Linux
Runs in any terminal, including over SSH Scriptable and highly configurable	Broad IRCv3 support including chathistory and soju bouncer features Native cross-platform app from one codebase
Keyboard and command driven, with a learning curve IRC only, no other chat protocols	Configuration is done by editing a text file IRC only; no other chat protocols
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0
No account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.