LanguageTool is an AI-based writing assistant that functions as a comprehensive tool going beyond simple spell checking. It is trusted by millions of users and thousands of organizations.

Here are the main characteristics of the tool:

Core Functionality and Error Correction

The primary function of LanguageTool is to check for grammatical errors and spelling mistakes across various languages. It is described as a powerful tool that offers in-depth analysis of text.

Key correction features include:

• Grammar Check: It eliminates grammar gaffes such as incorrect subject-verb agreement, wrong plural forms, or misuse of grammatical forms.

• Spelling Correction: It finds typos and misspellings, typically underlining them in red.

• Punctuation Fixes: It ensures proper usage of punctuation like commas, dashes, and hyphens. Its advanced punctuation checker excels at identifying and correcting comma errors, distinguishing between optional and required commas, and handling complex sentence structures. It can also advise when too many exclamation points have been used.

• Casing Confirmation: It corrects incorrect capitalization or lowercase letters related to names, months, places, or national identities.

• Style Improvement: It helps writing be more stylish by detecting overused phrases, foreign terms, redundant words, and improper word choice (indicated by a blue underline).

• Paraphrasing: It includes an A.I.-based paraphrasing tool that helps users rewrite entire sentences to make them simpler, shorter, more formal, fluent, or concise.

Language Support and International Reach

LanguageTool is referred to as the Most International Writing Tool.

• It masters more than 30 other languages and dialects.

• Its main languages include English, German, Portuguese, Spanish, French, and Dutch.

• For the English version, users can select between six standard varieties: US, UK, Canada, Australia, New Zealand, and South Africa.

• Browser add-ons automatically detect the language being used.

Availability and Integration

LanguageTool is not bound to a specific program or website. It provides extensive integration across various platforms:

• Dedicated Editor: Users can use the LanguageTool Editor, which offers a distraction-free writing experience, a Personal Dictionary, and secure text storage. The Editor also allows access to the "Picky Mode" for advanced suggestions on style and typography.

• Browser Add-ons: Available for all common internet browsers, including Chrome, Edge, Firefox, Safari, and Opera. These add-ons provide suggestions while typing emails, blog posts, or simple tweets. Crucially, the browser add-on does not store text to respect user privacy.

• Office and Mail Plugins: Add-ons are available for Gmail, Outlook (BETA), Apple Mail, and Thunderbird. Office plugins support Google Docs, Word (including macOS and Windows versions, and the online version), Apple Pages, and LibreOffice.

• Apps: Dedicated apps are available for macOS and Windows, enabling advanced grammar, spelling, and style suggestions in supported applications like Pages, Mail, Slack, Word, Notes, Messages (on macOS) and Outlook, Wordpad, and Notepad (on Windows).

Additional Features and Versions

• Statistics: A feature to track productivity and consistency in writing. It provides an overview of languages used, errors made, and suggestions applied, helping users see their skills improve.

• Error Display: Suggestions and error displays are shown automatically and directly while typing.

• Versions: LanguageTool is available in a Free version (which corrects spelling, simple punctuation, and some style mistakes) and a Premium version (which reveals all errors and offers the best possible text). Team accounts are also available for companies. Students may receive a discount.