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Parley vs Mnemosyne: catalog facts
Parley	Mnemosyne
Free Free and open source as part of the KDE applications.	Free Free and open source.
Windows, Linux	Windows, macOS, Linux
Spaced repetition scheduling for reviews Several training modes, including multiple choice and written answers	Spaced-repetition scheduling that focuses on cards you forget Uncluttered interface for newcomers
No mobile apps Desktop interface feels dated next to app-based trainers	Smaller community and fewer shared decks than Anki Plain, older-style interface
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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