Grammarly is an AI-powered writing assistant that offers both personalized advice and text completion to help you write more quickly and accurately. It's got features like contextual suggestions, integrations with popular apps, plagiarism detection and citation support. Grammarly works on all platforms, and there are various plans, including a free version, for different needs.
Another option is LanguageTool, which offers grammar and style checks, tone suggestions and paraphrasing. It works on more than 30 languages and dialects. Plugins for various writing tools and websites are available, as well as standalone apps for macOS and other operating systems. LanguageTool is good for individuals and teams, with advanced grammar and punctuation checks and the ability to set your own style guide.
If you want a native macOS app, Fixkey could be a good option. It's an AI Copilot that works with all your macOS apps to correct grammar and language issues without breaking your flow of work. Fixkey supports more than 200 languages, has customizable shortcuts and fast response times, and is designed to be a useful tool for writers who need language help without context switching.
Last, RewriteBar offers AI-powered writing help in many apps, including Chrome, Figma and Notion. It can correct grammar and spelling, adjust tone and translate text. With keyboard shortcuts that can be customized to your workflow and a privacy-first approach, RewriteBar is good for developers and anyone who needs writing tools that communicate clearly.