Grammarly helps you write mistake-free in Gmail, Facebook, Twitter, LinkedIn, and any other app you use. Even in text messages. Grammarly is available as a plug-in that is compatible with a range of apps and platforms — including Microsoft Office, Google Docs, Gmail, Slack and Overleaf (an online editor for the LaTeX typesetting language), as well as a keyboard app for mobile devices.It has both free and paid versions (A. Katsnelson, Nature, 609,208, 2022). Registration required.