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Gramma

Free#35 of 88 in Grammar Checkers

Gramma: A free, developer-focused checker for terminal workflows, Markdown, Git, Vim, and Neovim. Ranked #35 of 88 in Grammar Checkers by our editors (5.2/10); pricing: Free plan; best for developers and terminal-based writers.

5.2/10Editor score

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At a glance

Editor score
5.2 / 10
Pricing
Free plan
Best for
Developers and terminal-based writers
Free plan
Yes
Paid from
Free
Facts checked
21 Sep 2026

Where it wins
- Free open-source grammar, spelling, style, and typography checks
- Git hooks, project configuration, custom dictionaries, and language controls
- JavaScript API plus Vim, Neovim, Markdown, and browser support
Where it doesn't
- Developer-first workflow is less suited to general consumer writing
- Focused on plain text and Markdown rather than rich-document editing
- LanguageTool use requires choosing a remote API or local server

Our verdict on Gramma

Gramma is an open-source grammar checker for developers who write in terminals, repositories, editors, and code-adjacent workflows. It checks plain text and Markdown for grammar, spelling, punctuation, style, and typography issues. The tool supports interactive correction mode as well as non-interactive output, making it suitable for direct editing and automated checks. It runs on Linux, macOS, and Windows, with web, API, JavaScript, and browser-compatible bundle support also documented. Its free model makes it a practical fit for individual developers and technical writers who prefer configurable tooling over a consumer writing interface.

Its strongest advantage is how closely the workflow fits software projects. Git commit-hook integration can bring checks into repository processes, while global and project-specific configuration lets teams or individuals control behavior by context. Custom dictionaries, configurable languages, and rule controls add useful scope for technical vocabulary and project terminology. Vim and Neovim usage extends the same checking approach into terminal-oriented editing environments. The JavaScript API and browser-compatible bundles also give developers options beyond the command line, while integrations with LanguageTool and GrammarBot provide the underlying checking connections.

Gramma is most compelling when plain text, Markdown, source repositories, or terminal editors are central to the writing process. Its narrow focus is also the main boundary: writers seeking a broad consumer writing environment or rich-document editing should consider a different type of grammar checker. LanguageTool can run through a remote API or an optional locally managed server, so deployment choices matter for users deciding how the checker should fit their workflow. Choose Gramma for open-source, configurable developer tooling; look elsewhere if the priority is a general-purpose writing experience built around consumer-facing document editing.

Your product? Our editors can test Gramma in depth and publish a review, labelled as paid · from $149/mo →

Gramma pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on github.com

Gramma fact sheet

Free plan	Yes
Paid from	Free
Browser extension	Not verified
Desktop app	Not verified
Mobile app	Not verified
Style suggestions	Yes
Tone detection	Not verified
Languages supported	Not verified
Deployment	Self-hosted
Platforms	Windows, macOS, Linux, Web
Support	Docs
Built for	Solo, Small business (editorial estimate)
Integrations	5 integrations: LanguageTool, GrammarBot, Git, Vim, Neovim
Pricing	Free plan
Website	github.com
Facts checked	21 Sep 2026

Gramma integrations

Gramma lists 5 integrations on its own site.

LanguageTool
GrammarBot
Git
Vim
Neovim

Alternatives to Gramma

See all Gramma alternatives →

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Featured on iTechGuides

Gramma is listed in our Grammar Checkers directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update