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Parley vs Quizlet: catalog facts
Parley	Quizlet
Free Free and open source as part of the KDE applications.	Freemium Free to use, with paid plans for additional features.
Windows, Linux	Web
Spaced repetition scheduling for reviews Several training modes, including multiple choice and written answers	Study sets can be turned into flashcards, games and tests Large library of sets shared by other users
No mobile apps Desktop interface feels dated next to app-based trainers	Hosted service; your sets are stored on Quizlet's servers Some features sit behind a paid plan
Downloadable app	Web application
Open source	Closed source
License: GPL-2.0-or-later	License not stated
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 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.