Best AI tools for grammar style

Apple's on-device AI layer baked into iOS, iPadOS, macOS, and visionOS with a rebuilt Siri, writing tools, and image generation.

AI-powered writing coach and manuscript editor built for fiction authors and long-form writers.

Cross-app AI writing assistant that catches errors, rewrites paragraphs, and adjusts tone in the tools you already use.

AI writing assistant from the team behind DeepL Translator, tuned for fluent rewrites across 19 languages.

AI writing workspace built specifically for academic papers, theses, and cited research.

AI paraphrasing and grammar suite that grew into an all-in-one writing toolkit.

Browser extension that turns ChatGPT into a tracked-changes proofreader for your documents.

Browser-based AI writing assistant with autocomplete, persona-matching, and integrated research citations.

Privacy-first Mac AI writing assistant that redacts PII before any cloud call and indexes your files locally.

AI writing assistant built specifically for students and academic researchers.

Google Docs sidebar add-on that drops GPT-class drafting, rewriting, and summarization straight into your document.

Run local LLMs directly inside Microsoft Word without sending text to the cloud.

AI essay coach that scores and red-flags college application drafts against admissions rubrics.

Google Docs-style writing app with an LLM sidekick wired into every sentence.

AI-native document editor that drafts and rewrites in natural language, pitched as a Google Docs alternative.

AI rewriting and paraphrasing assistant from AI21 Labs that polishes tone, summarizes long content, and drafts in your voice.

Browser-side AI copilot that drops GPT-4 and Claude into Gmail, LinkedIn, and any web text field.