InstaText is an online writing and editing tool that uses artificial intelligence and natural language processing to improve your writing. It can improve clarity, rewrite text in context and provide concrete suggestions, and is good for academic, business and personal writing. InstaText is available as a browser extension and Microsoft Word plug-in, and it works with Google Docs and other apps.
Another option is ProWritingAid, which offers a broad range of AI-powered writing assistant tools. That includes tools for writing style, structure and readability, as well as real-time checks and plagiarism detection. ProWritingAid is available for Microsoft Word, Google Docs, Scrivener and major web browsers, so it's good for professional writers, students and businesspeople.
Grammarly offers personalized advice and text generation to help you write more quickly and accurately. It offers contextual suggestions, style guides and plagiarism detection, all built into websites and apps you're likely to use. Grammarly works on all devices and has a strong commitment to user security and data privacy, so it's a good option if you're concerned about that.
Last is LanguageTool, an AI-powered language checker and paraphrasing tool that works in more than 30 languages. It offers grammar checking, tone suggestions and paraphrasing options. Plugins for various writing tools and websites mean LanguageTool is good for professional and academic writers who need to write in multiple languages.