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GoldenDict-ng vs Kotoba: catalog facts
GoldenDict-ng	Kotoba
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source under the GPL-3.0-or-later licence.
Windows, macOS, Linux	Linux
Reads MDX, DSL, StarDict, Zim and other formats Shows several dictionaries' results on one page	Native GTK and libadwaita interface Written in Rust
Dictionaries must be obtained and added separately Many options to configure for a new user	Very young project, created in 2026 Linux only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-or-later
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 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.