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Kotoba vs Jisho: catalog facts
Kotoba	Jisho
Free Free and open source under the GPL-3.0-or-later licence.	Free Free to use online.
Linux	Web
Native GTK and libadwaita interface Written in Rust	Kanji lookup by radicals or handwriting Searches words, kanji, sentences and names at once
Very young project, created in 2026 Linux only	Works only online Japanese-English only
Downloadable app	Web application
Open source	Closed source
License: GPL-3.0-or-later	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
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.