LanguageTool is a free grammar checker and paraphraser for English, Spanish, and 20 other languages. Instantly check your text for grammar and style mistakes.
It’s working pretty well for me with integration into Firefox, (libre)office and you can decide if you want to run your own server locally, or rely on their server as a premium subscription.
It’s working pretty well for me with integration into Firefox, (libre)office and you can decide if you want to run your own server locally, or rely on their server as a premium subscription.