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Fcitx 5 vs Keyman: catalog facts
Fcitx 5	Keyman
Free Free and open source under the LGPL 2.1 or later.	Free Free and open source on all platforms.
Linux	Windows, macOS, Linux, Android, iOS, Web
Supports many languages through numerous input engines Slim core extended with addons	Keyboards for over 2,500 languages Available on desktop, mobile and web
Linux and Unix only Setup involves installing separate engines and configuring the environment	Layouts must be found and installed separately for each language
Downloadable app	Downloadable app, Web application
Open source	Open source
License: LGPL-2.1-or-later	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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