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Duden Mentor

Free online German spell checker powered by Duden's authoritative language standards

  • Data: EU
  • GDPR-native
  • EU-owned
Duden Mentor screenshot

Duden Mentor is a free online spelling and grammar checking tool for German text, operated by Cornelsen Verlag GmbH. It provides instant text corrections and verification based on Duden's authoritative German language standards and is hosted within the EU with GDPR compliance.

Duden Mentor is a free online spelling and grammar checking tool for German text, operated by Cornelsen Verlag GmbH. It provides instant text corrections and verification based on Duden's authoritative German language standards and is hosted within the EU with GDPR compliance.

Visit Duden Mentor →

Highlights

  • ✓Backed by Duden, Germany's authoritative language reference since 1880
  • ✓Data stored exclusively in Germany or EU per Cornelsen privacy commitment
  • ✓GDPR-compliant with clear data protection policies
  • ✓Free online access without registration for basic checking
  • ✓Instant text corrections powered by German language standards
Data location
EU
Pricing
Free
EU-owned
Yes
Self-hostable
No

Good for

  • Students checking homework and academic essays for German language compliance
  • Professional writers verifying business documents, emails, and content for corporate German standards
  • Non-native German speakers learning correct spelling and grammar rules interactively

A European alternative to

Frequently asked questions

Is Duden Mentor EU-owned and GDPR-native?
Duden Mentor — European-owned: Yes; GDPR-native: Yes; self-hostable: No; data stored in: EU.
How much does Duden Mentor cost?
Pricing model: Free. Check Duden Mentor's own site for current plans and numbers.
What are European alternatives to Duden Mentor?
Compare GDPR-native European alternatives to Duden Mentor — where each one is built, owned and hosted.

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