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mIRC vs WeeChat: catalog facts
mIRC	WeeChat
Paid Shareware that can be tried, with a paid registration from the official site.	Free Free software; the project accepts donations.
Windows	Linux, Command line
Mature client with over thirty years of development Still receiving releases	Full-featured IRC support including SASL and DCC Scripting in eight languages with a script manager
Windows only Proprietary shareware requiring registration	Terminal only, with a learning curve for new users IRC is the main built-in protocol
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.