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IceChat vs KVIrc: catalog facts
IceChat	KVIrc
Free Free and open source under the GPL.	Free Free to download and use; donations are accepted.
Windows	Windows, macOS, Linux
Multi-server and multi-channel support with a server tree Aliases, popups and themes for customization	Built-in scripting language with documented API Themes, addons and translations available
Windows only IRC is unencrypted unless the server supports TLS	IRC only, no other chat protocols Many options can feel heavy for casual use
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-2.0
No account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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