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Gramma review

Free#35 of 88 in Grammar Checkers

A free, developer-focused checker for terminal workflows, Markdown, Git, Vim, and Neovim.

5.2/10Editor score
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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.

Gramma pros and cons

  • 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

Gramma fact sheet, pricing and score →

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