LTeX+ ltex-plus/ltex-ls-plus

Language server and VS Code extension that runs LanguageTool offline to check grammar and spelling in LaTeX, Markdown, Typst and other markup.

Creator kit + Compare GitHub ↗ Install guide (official) ↗

LTeX+ at a glance

Checked 15 Oct 2026

LTeX+ is the maintained continuation of LTeX (whose original repos are archived): a language server (18.7.0, June 2026) plus a VS Code extension that bundles LanguageTool and Java and checks grammar and spelling offline in over 20 languages, including English, French, German, Dutch, Chinese and Russian. It understands LaTeX, Markdown, Typst, AsciiDoc, Org, reStructuredText and more. MPL-2.0. It works inside editors only, with no AI rewriting, tone changes or plagiarism checks.

Cite this pageRepoQuarry. “LTeX+.” Checked 15 Oct 2026. https://repoquarry.dev/projects/ltex-plus

How much of Grammarly does it replace?

1 of 5 jobs. Offline grammar and spelling inside code editors for markup files; no browser extension, AI rewrite or plagiarism check.

Grammar and spelling checks Partial replacement

Style and clarity suggestions Not covered

AI rewriting and tone changes Not covered

Works in the browser and other apps Not covered

Plagiarism check Not covered

For style and clarity suggestions, AI rewriting and tone changes, works in the browser and other apps, plagiarism check, see other Grammarly alternatives. You may also need to build an interface, an API server and hosting yourself.

Facts, with sources

Every answer links to where we found it. We read the documentation; we did not install it.

Report a correction

QuestionAnswerSourceChecked

Runs on my machine? Yes, offline language server; can optionally use an external LanguageTool server Offline checking: Does not upload anything to the internet github.com · ltex-ls-plus#features ↗ 1d ago

Code licence MPL-2.0 (weak copyleft); bundles LanguageTool (LGPL) github.com · LICENSE.md ↗ 1d ago

Model weights licence No separate model weights github.com · ltex-ls-plus#readme ↗ 1d ago

Commercial use Yes, MPL-2.0 and LGPL conditions apply if you modify and distribute github.com · ltex-ls-plus#readme ↗ 1d ago

Paid services needed? None required Comes with everything included, no need to install Java or LanguageTool github.com · ltex-ls-plus#features ↗ 1d ago

Hardware Not documented Know the answer? —

Operating systems Release builds for Windows, macOS and Linux (x64 and ARM64) ltex-ls-plus-18.7.0-windows-x64.zip github.com · 18.7.0 ↗ 1d ago

Setup effort Easy; install the VS Code extension, or download a bundled release for other LSP editors Comes with everything included, no need to install Java or LanguageTool github.com · ltex-ls-plus#features ↗ 1d ago