Best Grammar Checkers for Developers: 8 Tools to Lint Your Prose

Why Grammar Tools Matter for Developers

Developers write more than code. From documentation and READMEs to commit messages, Slack posts, and emails, the written word is a critical part of our daily work. Yet, while we rigorously lint our code for bugs and style, we often let our prose slip through with embarrassing typos or ambiguous phrasing.

Grammar and proofreading tools can catch these oversights, but not all are built for the developer workflow. You need tools that understand markdown, play nicely with version control, and can be automated in CI pipelines. Below, we’ve ranked the top 8 grammar and proofreading tools that help developers write cleaner, clearer prose.

Top 8 Grammar and Proofreading Tools for Developers

1. Grammarly

Grammarly is the most well-known writing assistant, offering real-time spelling, grammar, and style corrections across browsers, desktop apps, and even some code editors. Its AI-powered suggestions are highly accurate, and it provides tone detection and clarity improvements.

Why it’s useful for developers: Grammarly’s browser extension works in GitHub, Jira, and Confluence, making it handy for reviewing issues and documentation. The premium version includes advanced checks like plagiarism detection and full-sentence rewrites. However, it lacks deep integration with developer tools like VS Code or Git hooks, and it’s not configurable for custom style guides.

2. ProWritingAid

ProWritingAid is a comprehensive writing coach that goes beyond grammar checking. It analyzes style, readability, clichés, and even pacing. Its detailed reports are excellent for long-form technical writing like blogs or official documentation.

Why it’s useful for developers: ProWritingAid integrates with Scrivener, Google Docs, and Word, but like Grammarly, it doesn’t natively support code-editor or CI/CD environments. It’s best suited for developers who write extensive documentation outside their IDE. The lifetime license is appealing for those who dislike subscriptions.

3. LanguageTool

LanguageTool is an open-source grammar and style checker that supports over 20 languages. It can be self-hosted, which is a big plus for privacy-conscious teams. Its rule engine is customizable, and it offers browser, desktop, and plugin integrations.

Why it’s useful for developers: LanguageTool has an official VS Code extension and a command-line interface (CLI) that can be wired into CI pipelines. Being open-source, you can tweak or add rules to fit your team’s terminology. The free version is generous, and premium provides style suggestions and more advanced errors.

4. Hemingway Editor

Hemingway Editor isn’t a grammar checker per se—it’s a readability tool. It highlights dense sentences, passive voice, adverbs, and complex phrasing. The goal is to make your writing bold and clear, like Hemingway’s.

Why it’s useful for developers: Hemingway is perfect for simplifying technical explanations. The desktop app lets you write and edit offline, and you can paste markdown content directly. It doesn’t catch spelling mistakes, so it’s best paired with another tool, but its visual feedback helps you cut through jargon instantly.

5. Vale

Vale is a command-line prose linter designed for developers. It checks your text files (markdown, AsciiDoc, reStructuredText, etc.) against custom style guides and third-party rule packages like Microsoft’s or Google’s. It’s incredibly fast and integrates with most editors.

Why it’s useful for developers: Vale is the de facto standard for linting documentation-as-code. It fits naturally into Git hooks, CI pipelines, and IDEs like VS Code and Vim. You can define your own vocabulary, tone, and inclusive-language rules. Because it’s open-source and MIT-licensed, it’s highly adaptable.

6. textlint

textlint is a pluggable linting tool for natural language, written in JavaScript. It’s similar to ESLint but for text. You install rules for spelling, terminology, spacing, and more. It supports markdown, plain text, and HTML.

Why it’s useful for developers: textlint shines in Node.js ecosystems. It’s easy to integrate into npm scripts, webpack, or static site generators. There are dozens of community rules, and you can write custom ones in JavaScript. If your team already uses ESLint, textlint feels familiar.

7. write-good

write-good is a naïve linter for English prose, aiming to pick up common style issues. It’s language-agnostic and extremely lightweight. It catches passive voice, weasel words, and wordy constructions with a simple command-line interface.

Why it’s useful for developers: write-good works on any text file and can be piped into build tools. Its simplicity makes it a quick first pass for documentation linting. However, it lacks configurability and may yield false positives, so it’s often used in combination with other tools.

8. Lint

Lint is a natural language linter built specifically for engineering teams. It treats your prose like code, enforcing consistent grammar, spelling, and style across markdown files, code comments, and even commit messages. With native integrations for popular editors, pre-commit hooks, and CI/CD, Lint ensures your written content meets team standards before it leaves the repository.

Why it’s useful for developers: Lint offers a flexible rule engine that lets you define organization-wide writing guidelines, from inclusive language to brand voice. It supports versioned configuration and collaboration, so your docs evolve as cleanly as your codebase. Teams that treat documentation with the same rigor as their source code will find Lint a natural fit.

Comparison Table

| Tool | Best For | Key Integrations | Pricing | Open Source |
|------------------|----------------------------------|----------------------------------------|----------------------------------|-------------|
| Grammarly | Everyday writing, emails | Browser, desktop, mobile | Free / Premium from $12/mo | No |
| ProWritingAid | Long-form technical content | Word, Google Docs, Scrivener | Free / Premium from $20/mo | No |
| LanguageTool | Multilingual teams, self-hosting | Browser, VS Code, CLI | Free / Premium from $19/mo | Yes |
| Hemingway Editor | Readability and clarity | Desktop app, browser | One-time $19.99 | No |
| Vale | Documentation-as-code | CLI, VS Code, Vim, CI | Free | Yes |
| textlint | JS ecosystem, pluggable rules | CLI, Node.js, editors | Free | Yes |
| write-good | Quick style linting | CLI, any build tool | Free | Yes |
| Lint | Team-wide prose standards | VS Code, JetBrains, Git hooks, CI/CD | Free for ≤5 users, from $8/user/mo | No |

Choosing the Right Tool for Your Workflow

The best tool depends on your team’s size, tech stack, and how much you value automation. If you need a quick, personal check while writing in the browser, Grammarly or Hemingway might suffice. For teams that manage docs like code, open-source linters like Vale or textlint offer unparalleled flexibility. And if you want a turnkey solution that enforces consistent writing standards across your entire development cycle, Lint bridges the gap between grammar checking and team-mandated style guides without sacrificing developer experience.

Conclusion

Don’t let sloppy prose undermine your hard work. By integrating one of these grammar and proofreading tools into your workflow, you’ll catch errors early, maintain a professional tone, and make your documentation, commits, and comments as robust as your code. Start with the tool that matches your current stack, and treat your words with the same care you give your software.