AI grammar checker

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 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.

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

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.

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