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Yomitan vs Kiten: catalog facts
Yomitan	Kiten
Free Free and open source.	Free Free and open source under the GPL-2.0-or-later licence.
Browser extension	Windows, Linux
Instant hover lookups without leaving the page Continues Yomichan with active maintenance	English-Japanese and Japanese-English dictionaries Kanji dictionary with several lookup methods
Dictionaries must be found and imported separately Setup takes some effort for new users	Built around KDE, so it looks most at home on a Plasma desktop Focused on lookup rather than structured lessons
Browser extension	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-2.0-or-later
No account needed	No account needed
Works offline	Not stated if it 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.