Grammarly
Grammar and clarity checker that works in every app
Grammarly checks spelling, grammar, tone and clarity wherever you type, from Gmail to Google Docs to Slack. The free tier catches the basics; Pro…
QuillBot
Paraphraser, grammar checker and summariser in one
QuillBot is best known for its paraphrasing modes, which rewrite a passage for fluency, formality or length. It also bundles a grammar checker, summariser, citation generator and translator, which makes it popular with students and non-native English writers.
Best for: rewriting and paraphrasing
What works
- Paraphrasing modes are genuinely useful
- Cheap on the annual plan
- Browser and Word extensions
What to know
- Free plan caps paraphrase length
- Rewrites can drift from the original meaning
Alternatives
Rytr
Cheap, simple AI writer with 40+ templates
Rytr is the budget option: pick a use case, a tone and a language, get a draft. It will not replace a strategist, but for product descriptions…
Claude
Anthropic's assistant, strong at long documents and careful writing
Claude is the assistant many writers and developers reach for when tone and nuance matter. It works well with long documents, keeps a steady voice…