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Side-by-Side Comparison

LanguageToolvsQuillBot

Product A

LanguageTool

by LanguageTooler GmbH

Open-source grammar checker supporting 30+ languages and self-hosting.

Free tier
Visit LanguageTool
Product B

QuillBot

by Course Hero

AI paraphrasing tool with seven rewrite modes and a plagiarism checker.

Free tier
Visit QuillBot

Side-by-Side Comparison

FeatureLanguageToolQuillBot
Price
FreeBetter
Free
Free TierYesYes
Top Pros30+ language support including German, French, Spanish7 paraphrase modes for different tones
Self-hostable for full privacyGrammar checker + summariser bundled
Generous free tierWord and Google Docs add-in
Top ConsEnglish accuracy below GrammarlyWord limit on free tier
AI suggestions require PremiumCan over-homogenise the original voice
Choose LanguageTool if you…
  • Want: 30+ language support including german, french, spanish
  • Want: self-hostable for full privacy
  • Want: generous free tier
Try LanguageTool
Choose QuillBot if you…
  • Want: 7 paraphrase modes for different tones
  • Want: grammar checker + summariser bundled
  • Want: word and google docs add-in
Try QuillBot