The Best Open Source Duolingo AlternativesTop Language & Flashcard Learning Tools like Duolingo

The best open source alternative to Duolingo is LibreLingo. If that doesn't suit you, our users have ranked more than 100 alternatives to Duolingo and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Duolingo are Kana, Practice a Language, LinguaCafe and 10,000 sentences.

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Alternatives list

  1. LibreLingo icon

    LibreLingo

     44 likes

    My goal is to start a community-driven language-learning platform that gives its users and contributors a way to influence its future and adapt it to special requirements.

    Cost / License

    Application type

    Alerts

    • Discontinued

    Platforms

    • Online
    LibreLingo screenshot 1
     
    |
    4
    Discontinued

    From GitHub: "The repository will be archived until further notice. I am currently not maintaining LibreLingo. A few better-maintained forks exists, such as LibreLingoRelive. I am not directly affiliated with that fork or any other fork."

    LibreLingo vs Duolingo Comments
    hundvd7
    Negative
    2

    Absolutely not even close. Only Spanish from English, and 0 community features

    DeeJayLSP
    Negative
    3

    To date, it only allows learning Spanish from English

    Guest
    Positive
    5

    It is completely Free Open Source Software and everyone can use it.

    3 of 4 comments
    • LibreLingo is Free and Open SourceDuolingo is Freemium and Proprietary
  2. Kana icon

    Kana

     9 likes

    Hone your Japanese skills by matching romanized characters to their correct hiragana and katakana counterparts.

    Cost / License

    Application type

    Platforms

    • Linux
    • Flathub
    Kana screenshot 1
     
  4. Practice a Language icon

    Practice a Language

     8 likes

    Practice having a conversation in the language that you want to learn by speaking and writing with OpenAI's GPT-3.5. If you're still learning the language, then you can write your response in your native language and it will be translated to the language that you want to...

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    An example conversation
     
  5. LinguaCafe icon

    LinguaCafe

     5 likes

    LinguaCafe is a free, web-based and self-hosted platform that helps language learners read in foreign languages. It allows users to import texts from different sources, and provides a set of tools that helps them easily acquire vocabulary.

    Cost / License

    Platforms

    • Self-Hosted
    LinguaCafe screenshot 1
     
  7. 10,000 sentences icon

    10,000 sentences

     8 likes

    10,000 sentences is an Android app that will help you learn new words in foreign languages.

    Cost / License

    Alerts

    • Discontinued

    Platforms

    • Android
    • F-Droid
    10,000 sentences screenshot 1
     
    |
    1
    Discontinued

    Last release was in 2019 and last commit was in 2020

    10,000 sentences vs Duolingo Comments
    Guest
    Positive
    0

    Works offline, great for train journeys.

    • 10,000 sentences is Free and Open SourceDuolingo is Freemium and Proprietary
  8. Kakugo icon

    Kakugo

     2 likes

    Learn Hiragana, Katakana and Kanji through spaced repetition system for free.

    Cost / License

    Application type

    Platforms

    • Android
    • F-Droid
    Kakugo screenshot 1
     
  9. Aprelendo icon

    Aprelendo

     2 likes

    Language learning platform designed to boost your reading, listening, speaking and writing skills.

    Cost / License

    Application type

    Platforms

    • Online
    Learning from ebooks
     
  11. Yokatta icon

    Yokatta

     1 like

    Yokatta© is an open-source flashcards based language learning app using spaced repetition. The algorithm is heavily influenced by SuperMemo's SM-2 and follows best practices using Android Architecture Components provided by Google.

    Cost / License

    Platforms

    • Android
    • F-Droid
    Yokatta screenshot 1
     
  12. Japachar icon

    Japachar

     Like

    This application helps you to learn Japanese characters using a gradual learning algorithm which makes you test-like questions.

    Cost / License

    Application type

    Platforms

    • Linux
    • Flathub
    • Flatpak
    Japachar screenshot 1
     
  13. LangX icon

    LangX

     1 like

    LangX functions similarly to Tandem but has is more focused on language practice and is community-driven, free and open sourced! We are open for every contributions which is even a single line or image, we will be super happy about it.

    Cost / License

    Application type

    Platforms

    • Online
    • iPhone
    • iPad
    • Android
    LangX screenshot 1
     
  14. KoalaCards icon

    KoalaCards

     Like

    KoalaCards is a spaced repetition system focused on improving listening and speaking skills in foreign languages. It uses speech-to-text and large language models to objectively and flexibly grade your answers.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Online
    KoalaCards screenshot 1
     
12 of 21 Duolingo alternatives