LTeX+

At a glance

• Editor score
  3.9 / 10
• Pricing
  Open source
• Best for
  LaTeX and markup-heavy technical writing
• Paid from
  Free
• Facts checked
  21 Sep 2026

• Where it wins

  • Checks grammar and spelling offline across LaTeX and other markup
  • Offers hover explanations, quick fixes, and user dictionaries
  • Supports editor extensions, LSP, CLI use, and multilingual documents

• Where it doesn't

  • Its narrow focus is less suited to general-purpose writing
  • The documented integration is centered on LanguageTool
  • There are no paid tiers for teams seeking plan-based options

Our verdict on LTeX+

LTeX+ is a free, open-source grammar and spelling checker for LaTeX, Markdown, and other markup. It is aimed at technical writers, researchers, developers, and anyone working with documents where markup should remain intact during language checking. It can also inspect comments in many programming languages, making it relevant to code-adjacent documentation. The documented use cases include scientific papers, blog posts, book chapters, and long emails.

Its strongest advantage is its fit for technical writing workflows. LTeX+ checks documents offline, highlights issues, displays explanations on hover, and provides replacement suggestions through quick fixes. User dictionaries help accommodate specialized terminology, while multilingual document support suits projects that combine languages. The optional checking of programming-language comments extends the tool beyond conventional document editors. Visual Studio Code and Emacs extensions, Language Server Protocol support, and command-line usage provide several ways to incorporate checking into an existing writing or development workflow.

LTeX+ is a good choice when LaTeX or markup handling matters more than broad consumer-writing features. Its open-source model and offline operation also suit users who prefer local document checking. The trade-off is specialization: writers seeking a general-purpose grammar checker may find its scope too narrow, while organizations looking for a wider integration ecosystem or paid plan structure should consider alternatives. For technical authors who want LanguageTool-based checking through an editor, LSP, or command line, LTeX+ offers a focused option.

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LTeX+ pricing

LTeX+ fact sheet

LTeX+ integrations

LTeX+ lists 1 integrations on its own site.

• LanguageTool

Alternatives to LTeX+

• GrammarlyA broad writing assistant with strong grammar, tone, rewriting, and AI coverage.9.4
• LanguageToolA broad multilingual checker with open-source and self-hosting options.9.2
• Microsoft EditorA strong Microsoft 365 writing assistant with focused platform coverage.9.0

See all LTeX+ alternatives →

Featured on iTechGuides

LTeX+ 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