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senpai vs Halloy: catalog facts
senpai	Halloy
Free Free, with source code on sourcehut.	Free Free and open source under the GPL-3.0 licence.
Windows, Linux, Command line	Windows, macOS, Linux
History and search fetched from the bouncer File upload with drag and drop	Broad IRCv3 support including chathistory and soju bouncer features Native cross-platform app from one codebase
Works best with a bouncer supporting modern IRCv3 extensions Terminal only	Configuration is done by editing a text file IRC only; no other chat protocols
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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