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mIRC vs Halloy: catalog facts
mIRC	Halloy
Paid Shareware that can be tried, with a paid registration from the official site.	Free Free and open source under the GPL-3.0 licence.
Windows	Windows, macOS, Linux
Mature client with over thirty years of development Still receiving releases	Broad IRCv3 support including chathistory and soju bouncer features Native cross-platform app from one codebase
Windows only Proprietary shareware requiring registration	Configuration is done by editing a text file IRC only; no other chat protocols
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
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 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.