Language learning Firefox add-ons

Apps and tools for learning a language: courses, vocabulary, flashcards, exams. 120 live add-ons carry the topic.

Tags come from each listing's name, category and description, read in English: a listing written in another language is tagged only where it uses the English words.

Language learning on every store → All topics → All Firefox add-ons →
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  1. Yomitan↗

    by Darius Jahandarie · updated 2026-09-18

    Powerful and versatile pop-up dictionary for language learning used by 100,000+ language learners.

    appearance ★ Featured v26.9.8.0
    Daily users 49,735 +1,550 wk
    Rating 4.7 122 ratings
    Growth · week +3.3% avg of 10 days

  2. Duolingo Max↗

    by apersongithub · updated 2026-04-17

    Gives Duolingo Max features for free

    appearance v3.6
    Daily users 1,585 +40 wk
    Rating 5.0 29 ratings
    Growth · week +2.6% avg of 10 days

  3. asbplayer (Official)↗

    by asbplayer · updated 2026-09-28

    Enhance streaming video for language-learning.

    other v1.21.1
    Daily users 2,424 +58 wk
    Rating 4.8 10 ratings
    Growth · week +2.5% avg of 14 days

  4. Dual Subtitles & AI Translation - InterSub↗

    by InterSub · updated 2026-09-24

    Language learning with dual subtitle translator dualsub to immersive translate meaning of words: Spanish to English, to Japanese etc

    appearance v4.51.1
    Daily users 1,500 +34 wk
    Rating 3.9 20 ratings
    Growth · week +2.3% avg of 10 days

  5. Reverso – Translation, dictionary↗

    by Reverso.net · updated 2022-03-23

    Translate and learn languages while browsing and watching movies, it’s free.

    language-support v2.2.205
    Daily users 10,285 +148 wk
    Rating 4.2 320 ratings
    Growth · week +1.5% avg of 10 days

  6. Language Reactor sacrosanctx↗

    by colonelmd · updated 2025-09-17

    Learn languages effectively by watching films and series in your target language.

    language-support v5.1.4
    Daily users 5,495 +65 wk
    Rating 4.0 19 ratings
    Growth · week +1.2% avg of 10 days

  7. LingQ Importer↗

    by LingQ · updated 2026-08-16

    Automatically import foreign language pages, videos, movies from the web & study them with LingQ's web & mobile language learning apps.

    language-support v2.3.52
    Daily users 6,674 +68 wk
    Rating 4.0 21 ratings
    Growth · week +1.0% avg of 10 days

  8. ASBPlayer: Learn with Subs↗

    by MirSolUu · updated 2025-04-01

    Language learning subtitle player for streaming platforms like Netflix, YouTube, and more.

    web-development v1.9.1
    Daily users 2,348 +22 wk
    Rating 4.3 6 ratings
    Growth · week +1.0% avg of 14 days

  9. S3.Translator↗

    by Oleksandr · updated 2025-02-27

    S3.Translator adds the power of Google Translate’s automatic translations to your browser! It supports translation of selected text, entered phrase or whole webpage between any of 100+ languages. New

    language-support v6.30
    Daily users 16,279 +152 wk
    Rating 4.7 318 ratings
    Growth · week +0.9% avg of 10 days

    Unrated listings show no rating rather than zero — the store renders 0 out of 5 for never-rated items, and storing that as 0.0 would drag every category average down. Blank install counts are equally real: themes never show a count, and many small extensions don't either. Delisted listings are excluded from these views but retained in the database.