Grammar and Spell Checker - LanguageTool by LanguageTooler GmbH

4.6 Stars out of 5

Grammar and Spell Checker - LanguageTool version history - 25 versions

Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 11.0.1
Released 19 May 2026 - 15.06 MB
Works with firefox 128.0 and later
Source code released under All Rights Reserved
Download Firefox and get the extension
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Older versions
Version 10.0.9
Released 9 Jan 2026 - 14.71 MB
Works with firefox 128.0 and later
Source code released under All Rights Reserved
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Version 9.0.1
Released 21 Jul 2025 - 14.71 MB
Works with firefox 128.0 and later
Source code released under All Rights Reserved
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Version 8.19.4
Released 8 Apr 2025 - 14.02 MB
Works with firefox 128.0 and later
Source code released under All Rights Reserved
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Version 8.18.4
Released 11 Mar 2025 - 13.89 MB
Works with firefox 128.0 and later
Source code released under All Rights Reserved
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Version 8.14.3
Released 30 Dec 2024 - 12.82 MB
Works with firefox 128.0 and later
Source code released under All Rights Reserved
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Version 8.13.2
Released 29 Nov 2024 - 12.07 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.11.8
Released 23 Aug 2024 - 11.47 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.11.7
Released 15 Aug 2024 - 11.46 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.11.6
Released 7 Aug 2024 - 11.96 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.11.2
Released 1 Aug 2024 - 11.96 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.10.4
Released 10 Jul 2024 - 11.88 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.9.1
Released 5 Jun 2024 - 11.77 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.6.0
Released 14 Mar 2024 - 10.68 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.3.0
Released 23 Nov 2023 - 10.66 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 8.2.2
Released 17 Nov 2023 - 10.1 MB
Works with firefox 78.0 and later
Source code released under All Rights Reserved
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Version 7.1.13
Released 22 Jun 2023 - 10.07 MB
Works with firefox 60.0 and later
Source code released under All Rights Reserved
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Version 6.2.5
Released 20 Mar 2023 - 10.18 MB
Works with firefox 60.0 and later
Source code released under All Rights Reserved
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Version 6.2.2
Released 28 Feb 2023 - 10.12 MB
Works with firefox 60.0 and later
Several bug fixes; a new way to turn off the add-on (hover over the icon)
Source code released under All Rights Reserved
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Version 6.0.1
Released 24 Nov 2022 - 10.13 MB
Works with firefox 60.0 and later
Source code released under All Rights Reserved
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Version 5.8.10
Released 5 Nov 2022 - 7.66 MB
Works with firefox 60.0 and later
Source code released under All Rights Reserved
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Version 5.8.6
Released 30 Oct 2022 - 7.66 MB
Works with firefox 60.0 and later
Source code released under All Rights Reserved
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Version 5.4.3
Released 7 Aug 2022 - 7.28 MB
Works with firefox 60.0 and later
Source code released under All Rights Reserved
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Version 5.3.3
Released 12 Jul 2022 - 6.95 MB
Works with firefox 60.0 and later
Source code released under All Rights Reserved
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Version 5.3.0
Released 17 Jun 2022 - 6.95 MB
Works with firefox 60.0 and later
Activate the paraphrasing feature for more users
Source code released under All Rights Reserved
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