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Halloy vs KVIrc: catalog facts
Halloy	KVIrc
Free Free and open source under the GPL-3.0 licence.	Free Free to download and use; donations are accepted.
Windows, macOS, Linux	Windows, macOS, Linux
Broad IRCv3 support including chathistory and soju bouncer features Native cross-platform app from one codebase	Built-in scripting language with documented API Themes, addons and translations available
Configuration is done by editing a text file IRC only; no other chat protocols	IRC only, no other chat protocols Many options can feel heavy for casual use
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-2.0
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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