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Keyman vs XKey: catalog facts
Keyman	XKey
Free Free and open source on all platforms.	Free Free, with source code published on GitHub.
Windows, macOS, Linux, Android, iOS, Web	macOS
Keyboards for over 2,500 languages Available on desktop, mobile and web	Native macOS input method Documentation in Vietnamese and English
Layouts must be found and installed separately for each language	macOS only Small single-developer project
Downloadable app, Web application	Downloadable app
Open source	Closed source
License not stated	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.