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Mirumoji vs Memento: catalog facts
Mirumoji	Memento
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-2.0 licence.
Web, Self-hosted	Windows, macOS, Linux
Clickable word lookups in subtitles Whisper-based subtitle generation	Popup dictionary over subtitles using Yomitan dictionaries One-step Anki card creation via AnkiConnect
Only for learning Japanese Requires Docker setup	Focused on Japanese only macOS build is for Apple Silicon (arm64)
Self-hosted	Downloadable app
Open source	Open source
License: MIT	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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