Apps similar to ProWritingAid include LanguageTool, which is open source but paid. DeepL Write and Harper are free. Other options are Grammarly, Grammit, Doco and Refine. You're spoiled for choice with Grammar Checkers like ProWritingAid: we list more than 100 alternatives for the web, Mac, Windows, iPhone and Android.
Open-source grammar checker and writing assistant for Chrome that uses Chrome's built-in model or your own AI provider, with no backend or telemetry.
Spain
EU
AI text correction & translation via keyboard shortcuts. Highlight text, hit shortcut & fix or translate instantly. 100% private: activates only on demand & sends data directly to your API provider.
Canada
AI writing tool that rewrites, checks grammar and summarizes without changing your facts. 17 modes, including Legal, Medical and Energy.
United States
sharp-pen is an open-source proofreading tool that runs inside an AI assistant such as Claude, ChatGPT, Codex or Copilot. Given a draft, it produces an interactive two-pane review page: the original text on the left, suggested corrections on the right, with each difference...
SwedenEU
Foresty is an AI email assistant for Gmail and Outlook that helps you draft, reply, follow up, and improve emails instantly - without leaving your inbox.
India
A focused Chrome extension for professionals who want grammar correction without AI rewriting. It works in text fields across websites, flags and fixes grammatical errors, and preserves the writer’s original wording, tone, and voice instead of adding tone coaching or generated text.
Kazakhstan
Private Mac writing assistant that reads screen context to draft replies, complete sentences, correct grammar, and rephrase text in your tone. Suggestions work across apps and websites, support 36 languages, and can be accepted with Tab.
United States
A prose editor that highlights flat, mechanical-sounding writing, like repetitive sentence rhythm and stock phrases, without rewriting your text.
United States
FranceEU
Engram is an AI-powered English grammar checker and paraphraser for non-native speakers, using our proprietary AI and ChatGPT for context-based sophisticated edits. Unlike other grammar checkers, Engram is tailored for non-native English speakers, aiding international students...
Plagiarism Checker is a tool that quickly detects plagiarism, verifies content originality, and checks for AI-generated text, supporting multiple languages and large documents.
Hong Kong SAR China
Blogbutler.ai automates blog creation using external data or its own ideas, enhancing SEO and enabling easy publishing across multiple platforms.
