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Open Source

Xerify vs Arelle

Arelle is the reference open-source XBRL processor. Used by regulators and as the basis for many commercial products.

Founded 2010
Free (Apache 2.0)

Feature Comparison

FeatureXerifyArelle
XBRL Validation
iXBRL Validation
ESEF Support
Solvency II
COREP/FINREP
xBRL-CSV/OIM
REST API
Batch Processing
Error Explanations
Multi-language UI
Free Tier
Self-hosted Option
Full support
Partial
Not available

Arelle Strengths

  • +Free and open source
  • +Reference implementation
  • +Full XBRL spec support
  • +Active community

Arelle Limitations

  • No UI/dashboard
  • Requires technical expertise
  • No support included
  • DIY error handling

Best For

Choose Xerify if you need

  • Multi-regulatory validation (ESEF, EBA, EIOPA, ACPR)
  • Modern API-first architecture
  • Free tier for testing and small teams
  • Explainable validation with fix suggestions

Choose Arelle

  • Developers
  • Custom integrations
  • Budget-conscious teams

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