Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online
- Software as a Service (SaaS)

Harper is described as 'English grammar checker designed to be just right. I created it after years of dealing with the shortcomings of the competition' and is a Grammar Checker in the development category. There are more than 50 alternatives to Harper for a variety of platforms, including Web-based, Mac, Windows, Google Chrome and Mozilla Firefox apps. The best Harper alternative is LanguageTool, which is both free and Open Source. Other great apps like Harper are Grammarly, DeepL Write, Grammit and Refine.

AI-powered desktop writing assistant for grammar correction, rewriting, and translation with global keyboard shortcuts.




Stylo fixes your writing in seconds — paste your text, pick a style. No more awkward phrasing, no more grammar mistakes, just clean polished text every time.

WordWand is a system-wide AI assistant for macOS that works in any app through a single keyboard shortcut. No copy-pasting, no tab switching — just select text, press a hotkey, and transform it instantly.



AI-powered grammar correction tool using fine-tuned language models to fix grammatical errors in text.

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.




Finds misspelled words on any web page. Works 100% offline. No account, no ads, no tracking, no data leaves your browser.




A background assistant that removes the stress of spelling and grammar. Built for accessibility, designed to stay out of your way.



Grammar Checker is an advanced proofreading tool that identifies grammar and spelling errors, delivers clear explanations, and offers practical suggestions.

ReverseGPT is an AI writing suite built around one job: taking an AI draft and making it read like human writing, without losing the meaning.



Plagiarism Checker is a tool that quickly detects plagiarism, verifies content originality, and checks for AI-generated text, supporting multiple languages and large documents.

Pluma is a browser extension that allows you to spellcheck and edit text as you browse.

