RedPen

Spec sheet

Purpose

RedPen is a proofreading tool for writers and programmers who write technical documents or manuals that must follow a writing standard.Read 8 Oct 2026 · redpen.cc

Audience

RedPen is described as a tool for writers or programmers producing technical documents or manuals that must follow a writing standard.Read 8 Oct 2026 · redpen.cc

Platforms

The project README lists macOS, Windows, and Linux as supported platforms.Read 8 Oct 2026 · github.com

Integrations

The project lists integrations or packages for Atom, Emacs, Vim, WordPress, IntelliJ IDEA, Sublime Text, and Visual Studio Code.Read 8 Oct 2026 · github.com

Support

The project lists documentation, a mailing list, and English and Japanese chat rooms for support.Read 8 Oct 2026 · github.com

License

The project repository identifies its license as Apache-2.0.Read 8 Oct 2026 · github.com

API and UI

The project README links to a REST API and user interface.Read 8 Oct 2026 · github.com

Command-line and CI

A maker blog describes running RedPen from the command line in a Travis CI workflow to check document quality.Read 8 Oct 2026 · blog.redpen.cc

Customization

Users can choose validators and add them to a configuration file.Read 8 Oct 2026 · redpen.cc

Document formats

It validates markup text including Markdown, Textile, AsciiDoc, reStructuredText, and LaTeX.Read 8 Oct 2026 · redpen.cc

Extensions

The project supports a plugin system that lets users write extensions with JavaScript.Read 8 Oct 2026 · github.com

External validation

The WordPress plugin blog says it uses a public RedPen server by default and can be configured to use the user's own RedPen Server instance.Read 8 Oct 2026 · blog.redpen.cc

Formats

The site lists Markdown, Textile, AsciiDoc, reStructuredText, and LaTeX as supported markup formats.Read 8 Oct 2026 · redpen.cc

JetBrains integration

The RedPen IntelliJ IDEA plugin adds text validation as an editor inspection and supports plain text, properties and resource bundles, Markdown, and AsciiDoc when relevant plugins are installed.Read 8 Oct 2026 · blog.redpen.cc

Languages

The maker says RedPen works with documents in languages including English, German, Japanese, and Chinese.Read 8 Oct 2026 · redpen.cc

Natural-language checking

It automates checks on documents written in natural languages, rather than programming languages.Read 8 Oct 2026 · redpen.cc

REST API

The RedPen Server provides REST endpoints for validating documents with preset or user-supplied configuration.Read 8 Oct 2026 · blog.redpen.cc

WordPress integration

The RedPen WordPress plugin validates posts while users type and can highlight errors in the editor.Read 8 Oct 2026 · blog.redpen.cc

Where Specifiction places it

• Writing Style Checkers#27 of 297.0