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Memrise vs DL: language lessons: catalog facts
Memrise	DL: language lessons
Freemium Free to start, with paid options for full access.	Free The client is free and open source under GPL-3.0; Duolingo's own plans apply.
Web	Linux
Very large choice of languages, including rare and classical ones Videos of native speakers rather than synthetic voices	Dedicated window for Duolingo on Linux Blocks common trackers
Proprietary service tied to the company's own course content Less suited to learners who want to build their own study material	Unofficial and not affiliated with Duolingo Only wraps the web app, so it needs an internet connection to Duolingo
Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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