First released in March of last year, Microsoft Editor can help anyone improve their writing in Microsoft Word and Outlook on Windows 10. However, its rival Grammarly will soon be available in Word for Mac according to a new post on the sheet. Microsoft 365 pathfinder. For those new to Microsoft Editor, the writing tool uses AI to check your writing and offers advanced suggestions based on your work's clarity, formality, inclusiveness, and more. In addition to helping you improve your writing, it also includes a plagiarism checker to make sure your work is original and has been cited correctly. Although a free version of Microsoft Editor is available and only offers basic spelling and grammar checking, you'll need to upgrade to Microsoft 365 to access the tool's advanced grammar, clarity, conciseness, formal language, vocabulary, and punctuation features.