Grammarly is a free, or premium if you purchase, grammar-checker, spell-checker, style-checker and plagiarism checker. Also available as an add-on for Firefox or Chrome to check your grammer in the browser, or as a plugin for Microsoft Word.
Head to the website and create a login. Then you’ll be able to write directly in a new Grammarly document, or you can cut and paste text into Grammarly,
or use an add-on for Firefox or Chrome to check your grammar in a Google Doc or other place using your browser. There’s also a plugin available for Microsoft Word.
Why is Grammarly important? It provides details about each of its choices for your grammar, spelling and style to help you understand. You can also customize it to help Grammarly understand your style better.