Grammar Firefox add-ons

Grammar and spell checkers, proofreading and punctuation tools.

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.

Topics are being computed - the first pass is under way.

Grammar on every store → All topics → All Firefox add-ons →
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Every topic, every store →
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  1. Bulgarian Dictionary↗

    by Стоян Димитров · updated 2025-12-10

    Bulgarian spellchecking...

    general v4.4.5
    Daily users 17,097 +493 wk
    Rating 4.9 12 ratings
    Growth · week +3.0% avg of 10 days

  2. Arabic spell-checking dictionary↗

    by Dan Kenigsberg · updated 2024-04-25

    Arabic spell-checking dictionary for Firefox 3 and Thunderbird 3 from Ayaspell.

    general v3.2.20120321.2resigned1
    Daily users 31,169 +466 wk
    Rating 4.1 58 ratings
    Growth · week +1.5% avg of 13 days

  3. Afrikaans spell checker↗

    by Dwayne Bailey · updated 2024-04-25

    Afrikaans spell checker for Mozilla Firefox and Thunderbird

    general v20110323.3resigned1
    Daily users 1,890 +13 wk
    Rating 4.1 13 ratings
    Growth · week +0.7% avg of 13 days

  4. British-English Dictionary (GB)↗

    by cybrkyd · updated 2026-06-25

    A strict British-English spell checker dictionary for Firefox, Thunderbird and SeaMonkey. This dictionary only includes words conforming to the preferred standard of British-English spelling.

    general v5.1
    Daily users 29,567 +4 wk
    Rating 4.7 23 ratings
    Growth · week +0.0% avg of 10 days

  5. Bengali (Bangladesh) Dictionary↗

    by Jamil Ahmed · updated 2024-04-25

    Bengali Bangladesh (bn-BD) spell checking dictionary.

    general v0.9b.2resigned1
    Daily users 1,223 -25 wk
    Rating 4.2 29 ratings
    Growth · week -2.0% avg of 11 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.