redpen
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Description:
Proofreading tool to help writers of technical documentation
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: proofreading documentation writing validation technical-writing
Install: brew install redpen
About:
Redpen is a proofreading tool designed specifically for technical documentation and content creators. It analyzes text for grammatical errors, stylistic inconsistencies, and formatting issues that are common in technical writing. The tool helps ensure clarity and professionalism in documents, presentations, and blog posts.
Key Features:
  • Supports multiple natural languages
  • Validates document structure and formatting
  • Extensible via custom validation rules
  • Integrates with AsciiDoc, Markdown, and LaTeX
  • Command-line interface for automation
Use Cases:
  • Validating technical documentation before publication
  • Checking blog posts for grammatical errors
  • Ensuring consistent style across team-written documents
Alternatives:
  • vale – Vale is more focused on style enforcement and supports custom style guides, while Redpen specializes in technical document validation.
  • languagetool – LanguageTool is a general-purpose grammar checker, whereas Redpen is tailored for technical documentation formats.
Version History
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