LanguageTool vs Grammarly
Considering a switch from Grammarly to a European alternative? LanguageTool offers full GDPR compliance and EU-only data hosting without the legal uncertainties that come with US-based services. Here's how they compare on features, pricing, and data protection.
Quick Overview
LanguageTool
EU- Headquarters
- Potsdam, DE
- Pricing
- Free
- Open Source
- Yes
Grammarly
USGrammarly is an AI-powered writing assistant that provides grammar checking, style suggestions, tone detection, and plagiarism detection across platforms and applications.
The Case for LanguageTool
- LanguageTool stores all data exclusively in Germany, under European jurisdiction. Unlike Grammarly, which is subject to the US CLOUD Act and FISA Section 702, LanguageTool cannot be compelled by foreign governments to hand over your data.
- LanguageTool offers a Data Processing Agreement (DPA) that is fully aligned with GDPR Article 28. There is no legal ambiguity about data transfers or adequacy decisions — your data processor is European, and the law that governs it is European.
- As an open-source solution, LanguageTool gives you full code transparency. You can verify that the software does what it claims, audit it for security vulnerabilities, and even self-host it for maximum control — something that is simply not possible with Grammarly.
- You can try LanguageTool for free before committing. This makes it easy to evaluate whether it meets your needs alongside — or as a replacement for — Grammarly, without any financial risk.
Why Switch to LanguageTool?
Concerns with Grammarly
- US CLOUD Act jurisdiction
- All text content sent to US servers for processing
- Extensive data retention of user-written content
- AI training on user content raises intellectual property concerns
LanguageTool Compliance
GDPRDPA
- Headquarters
- Potsdam, DE
- Data Centers
- DE
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LanguageTool vs Grammarly — FAQ
Is Grammarly GDPR compliant?
Grammarly may offer GDPR compliance features and EU data residency options, but as a US-headquartered company, it remains subject to the US CLOUD Act and FISA Section 702. These laws can compel US companies to hand over data regardless of where it is stored. The EU-US Data Privacy Framework provides some safeguards, but its predecessors (Safe Harbor and Privacy Shield) were both invalidated by the European Court of Justice. LanguageTool, as a European company, is not subject to these US laws at all.
How does LanguageTool compare to Grammarly in features?
LanguageTool offers Grammar checking, Style suggestions, Paraphrasing, 30+ languages, and 5 more features. While Grammarly's ecosystem may be larger due to its market position, LanguageTool covers the core functionality that most teams need. The trade-off is typically between breadth of integrations (Grammarly) and data sovereignty with regulatory certainty (LanguageTool).
Can I migrate from Grammarly to LanguageTool?
Yes. Most European software providers, including LanguageTool, offer migration tools or documentation to help you transition from US-based services. Under GDPR Article 20, you have the right to data portability — meaning Grammarly must provide your data in a machine-readable format. The migration process varies in complexity depending on your data volume and integrations, but for most teams it can be completed within a few days to a few weeks.