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keyd vs Uncap: catalog facts
keyd	Uncap
Free Free, with source code published on GitHub.	Free Free and open source under the MIT license.
Linux, Command line	Windows
Works on X11, Wayland and the console alike Uses kernel input layer, not a desktop toolkit	Maps Caps Lock to Escape Can map other keys to different keys
Linux only Configured by editing files, no GUI	The utility runs on Windows
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
No account needed	Not stated if an account is needed
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 October 8, 2026

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