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
| Feature | LanguageTool | QuillBot |
|---|---|---|
| Price | FreeBetter | Free |
| Free Tier | Yes | Yes |
| Top Pros | 30+ language support including German, French, Spanish | 7 paraphrase modes for different tones |
| Self-hostable for full privacy | Grammar checker + summariser bundled | |
| Generous free tier | Word and Google Docs add-in | |
| Top Cons | English accuracy below Grammarly | Word limit on free tier |
| AI suggestions require Premium | Can 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
Choose QuillBot if you…
- Want: 7 paraphrase modes for different tones
- Want: grammar checker + summariser bundled
- Want: word and google docs add-in