Language Tool. Online Open Source Corrector

Last updated on 12 May 2026

Language Tool is a open source corrector that you can use online or that you can install on your computer.

A good tool, simple and free, to use oneself or to advise one’s pupils to check the grammar, spelling and typographical rules of a text before publishing or rendering it. Professional software is often very expensive, but fortunately there are online solutions, We introduced Sribens here. For example, a few days ago. These tools are aids to correction and will never replace your vigilance, but they can help you chase the blame. Language tool is one of them.

Using the Language Tool is easy. Simply copy and paste the text you want to check on the homepage of the site and then click on the ‘check text’ button. Immediately Language Tool will highlight all detected errors in color. A click on each of them will show you an explanation of the error and a proposed change. You can always ask Language Tool to ignore the proposal.

Language Tool has two strengths. The first is Number of languages supported. More than 20. The main languages are English, French and Spanish, but also other, less common languages such as Khmer and Ukrainian. The service also supports several regional languages such as Catalan or Breton. A variety of languages that are difficult to find, including in paid tools.

The other strength of Language Tool is the possibility to use it either online or from your computer without the need for an internet connection. In addition to the site, Language Tool can be downloaded to your computer, it can also be integrated with Libre Office and Open Office suites. It can finally be integrated with an extension to your Firefox browser.

A credible alternative expensive and complex proofreaders.

Link: Language Tool.