LanguageTool

Instantly check grammar and style in 30+ languages.

Freemium

LanguageTool Overview

What is LanguageTool?

LanguageTool is a free online proofreading service that helps you check your text for grammar and spelling mistakes in over 30 languages. It offers a wide range of features for both casual and professional use, such as an AI-based grammar checker, a personal dictionary, quality scoring for texts, and more. It includes browser add-ons for Chrome, Edge, Firefox, Safari, and Opera, as well as Office plugins for Google Docs, Word, OpenOffice, and LibreOffice. It also offers desktop apps for macOS and Windows, E-Mail add-ons for Gmail, Outlook, Apple Mail, and Thunderbird, and Editor Apps for iOS, macOS, and Windows. Premium users also have access to a rephrasing tool, Picky Mode for advanced punctuation, and style, and typography suggestions. LanguageTool is trusted by organizations such as BMW Group, Amazon, RingCentral, European Union, Spiegel Magazine, Deutsche Presse-Agentur (dpa), Heise, Bertelsmann Stiftung, Schweizer Radio und Fernsehen (SRF), JetBrains, IP Australia, and Wirtschaftsuniversität Wien. It is free to use and also offers a 20% discount for its Premium version. Help other people by letting them know if this AI was useful. Add your own prompts and outputs to help others understand how to use this AI.

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Pros & Cons

Pros

Supports over 30 languages
Personal dictionary
Quality scoring for texts
Browser add-ons for Chrome, Edge, Firefox, Safari, Opera
Office plugins for Google Docs, Word, OpenOffice, LibreOffice
Desktop apps for MacOS, Windows
Email add-ons for Gmail, Outlook, Apple Mail, Thunderbird
Editor apps for iOS, MacOS, Windows
Advanced punctuation suggestions (Picky Mode)
Style and typography suggestions
Text rephrasing tool for Premium users
20% discount on Premium version
Respected by reputable organizations
Spelling and grammar checking
Instantly detects working language
Doesn't store user text (privacy)
Advanced grammar, spelling and style suggestions
Supports all favourite writing apps
Coherence and fluency in rewriting sentences
Helps to avoid embarrassing style, punctuation, grammar mistakes
Free version available
Team accounts for companies
Student discount available
Analyzes all types of texts
Fast error detection and correction
Synonyms suggestion
Recognizes different English dialects
Differentiates between optional and required commas
Comprehensive punctuation check
Suitable for academic texts
Casing correction
Style improvement suggestions
Overused phrases detection
Foreign terms detection
Redundant words detection
Improper word choice detection
Professional writing with Premium version

Cons

Depends on Java 8
Requires account for rephrasing
Repasting required for full-document checking
Some features are platform-specific
Premium version required for full functionality
No voice-input option
Lacks real-time correction feature
Quality scoring only for registered users
Lacks mobile support
Full features not available for beta versions

A Professional Framework to Evaluate LanguageTool

When considering LanguageTool for integration into your organizational workflow, we recommend deploying a structured score card across three critical operational pillars: Security & Compliance, Integration Friction, and long-term Price Scalability. Rather than looking only at basic feature lists, modern procurement teams must assess how a software platform behaves under high load and how well it fits into the team's data security guidelines.

1. Security and Database Compliance

Depending on your operating region and field, ensure that LanguageTool supports standard security layers such as SOC 2 Type II certifications, GDPR compliance, or HIPAA-compliant database encryption. If the tool connects directly to client database tables or handles user passwords, verify that they implement multi-factor authentication (MFA), single sign-on (SSO) integrations, and end-to-end data encryption in transit and at rest.

2. API Coverage and Custom Integrations

Siloed data is the primary cause of operational friction. Evaluate if LanguageTool has native connectors for your current project trackers, messaging hubs, and customer communication channels. For custom developer requirements, check if they provide a fully documented REST API with reasonable rate limits, comprehensive Webhooks support, and robust SDK packages in your language. A flexible API layer saves hundreds of hours of manual copy-paste overhead.

3. Total Cost of Ownership (TCO)

SaaS pricing packages are often deceptively simple. When reviewing LanguageTool's billing structure, map out your team's projected expansion over the next 12 to 24 months. Determine how costs scale as your customer database increases or as you add team members. Factor in setup costs, mandatory support plan upgrades, API access fees, and storage overage rates to understand the true cost before committing to a contract.

By combining verified user reviews from our directory with internal workflow pilot tests, your procurement team can make an informed decision that drives productivity without creating capital waste.