Hemingway Editor

Wordtune

Wordtune is an AI writing assistant from AI21 Labs that rewrites sentences to sound clearer, more concise, or more persuasive, offering multiple phrasing alternatives and tone adjustments between formal and casual for any piece of text. It works as a browser extension and web editor, integrating into places people already write online such as Gmail and Google Docs. Beyond rewriting, Wordtune summarizes long articles and webpages into key points, checks grammar and spelling, expands vocabulary with contextual synonym suggestions, and translates text from 10 languages into English. It is aimed at professionals, content creators, students, and non-native English speakers who want to sound more natural and confident without hiring an editor.

ProWritingAid

ProWritingAid is a writing toolkit built for authors, covering the full book-writing process from planning through editing. It includes a Story Canvas and Plot Analysis for planning, a distraction-free Write Mode with Creative Nudges for drafting, and grammar and style checking with detailed Writing Reports for line editing. Beyond grammar checking, it offers story-level critique tools such as Chapter Critique, Character Analysis, Manuscript Analysis, and a Virtual Beta Reader, plus community writing events like Novel November. It integrates with Microsoft Word, Google Docs, Scrivener, and major browsers, and is positioned around helping writers finish their work rather than writing for them.

Grammarly

Grammarly is an AI writing assistant that checks grammar, spelling, punctuation, and style in real time across browsers, desktop apps, and mobile keyboards. It integrates directly into Gmail, Google Docs, Microsoft Word, Slack, and thousands of other websites via a browser extension. Beyond basic correctness, Grammarly analyzes tone and clarity, suggesting rewrites to make writing more concise, confident, or friendly depending on the context and audience selected by the user. GrammarlyGO adds generative AI features for drafting emails, replying to messages, and rewriting passages on demand, while Grammarly Business adds brand style guides and analytics for teams that need consistent written communication across an organization.