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Irssi vs senpai: catalog facts
Irssi	senpai
Free Free and open source.	Free Free, with source code on sourcehut.
macOS, Linux, Command line	Windows, Linux, Command line
Runs in any terminal, including over SSH Scriptable and highly configurable	History and search fetched from the bouncer File upload with drag and drop
Keyboard and command driven, with a learning curve IRC only, no other chat protocols	Works best with a bouncer supporting modern IRCv3 extensions Terminal only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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