Mnemosyne
Mnemosyne: An open-source flash-card system for adaptable study across desktop and Android. Ranked #2 of 38 in Spaced Repetition Software by our editors (9.1/10); pricing: Free plan; best for free, open-source study on desktop and Android.
At a glance
- Editor score9.1 / 10
- PricingFree plan
- Best forFree, open-source study on desktop and Android
- Free planYes
- Paid fromNone
- Review algorithmAdaptive
- Facts checked28 Sep 2026
Where it wins
- Schedules reviews according to how well you remember each card
- Supports image, audio, and video cards plus linked card types
- Imports from Anki and other formats, with plugins and bidirectional sync
Where it doesn't
- Mobile app support is focused on Android
- Browser reviews require a server hosted on a desktop
- Designed for individual learners, not educator workflows
Our verdict on Mnemosyne
Mnemosyne is a free, open-source flash-card program for individual learners who want review timing to respond to how well they remember each card. It runs on Windows, macOS, and Linux, with an Android client for offline reviews and synchronization. The project also describes the software as part of research into long-term memory. It suits self-directed study more than classroom administration: shared decks are supported, but educator tools are not part of its listed capabilities.
Cards can contain images, audio, and video, and Mnemosyne can create linked recognition and production cards. Tags and card sets help organize and select material, while statistics include retention and the review schedule. Imports from Anki, SuperMemo, CueCard, and text formats can help learners bring existing material into the program. Plugins and a scripting API allow extensions; Google Translate and Google Text-to-Speech are listed integrations. These features make it a broad personal study system rather than a narrowly focused flash-card app.
The desktop applications, Android client, and bidirectional synchronization support study across devices, including offline reviews on Android. Browser-based reviewing works through a web server hosted on a desktop, so it is less direct than using a standalone web service. The project says the software can be used offline without sending research data, and documentation is the listed support channel. Choose Mnemosyne if you want free software with import options, media cards, and configurable extensions; look elsewhere if your priority is educator tooling or browser access without a desktop-hosted server.
Mnemosyne pricing
Mnemosyne fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Review algorithm | Adaptive |
| Daily review limit | Not verified |
| Offline access | Yes |
| Mobile apps | Android |
| Rich media cards | Yes |
| Educator tools | No |
| Shared deck library | Yes |
| Deployment | Desktop, Mobile, Browser extension |
| Platforms | Windows, macOS, Linux, Android, Web |
| Support | Docs |
| Built for | Solo (editorial estimate) |
| Integrations | 2 integrations: Google Translate, Google Text-to-Speech |
| Pricing | Free plan |
| Website | mnemosyne-proj.org |
| Facts checked | 28 Sep 2026 |
Mnemosyne integrations
Mnemosyne lists 2 integrations on its own site.
- Google Translate
- Google Text-to-Speech
Alternatives to Mnemosyne
- AnkiA flexible flashcard system with adaptive scheduling and cross-device sync.9.4
- SuperMemoStructured language lessons meet adaptive reviews for steady, individual study.9.0
- BrainscapeBrainscape pairs guided review with AI card creation and shared study libraries.8.7
See all Mnemosyne alternatives →
Mnemosyne vs the competition
- Mnemosyne vs Anki
- Mnemosyne vs SuperMemo
- Mnemosyne vs Brainscape
- Mnemosyne vs RemNote
- Mnemosyne vs Mochi
- Mnemosyne vs Flashcards World
Compare Mnemosyne with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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