LanguageTool is a tool used to check spelling and grammar within text. It is free to use as long as no more than 20,000 characters are submitted at a time. Details regarding pricing is found at https://languagetool.org/#Price.

In the Spell-checking using the LanguageTool API recipe, we demonstrated how to perform spell-checking. In this recipe, we will demonstrate how to check the grammar of a text.