Compare software

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

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