brat

brat rapid annotation tool

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Overview

brat is an open-source, web-based tool for text annotation. It is highly configurable and supports a wide range of annotation tasks, including named entity recognition and relation extraction. It is particularly popular in the academic and research communities.

✨ Key Features

  • Named entity annotation
  • Relation annotation
  • Support for complex annotation schemas
  • Collaborative annotation
  • Open-source and self-hostable
  • Integration with external resources

🎯 Key Differentiators

  • Highly configurable for complex annotation tasks
  • Well-established in the research community
  • Focus on linguistic annotation

Unique Value: A highly customizable and free open-source tool for in-depth text annotation.

🎯 Use Cases (3)

Linguistic annotation Bio-medical text mining Digital humanities

✅ Best For

  • Annotating scientific papers for entity and relation extraction

💡 Check With Vendor

Verify these considerations match your specific requirements:

  • Users who require a modern, easy-to-use interface without any setup

🏆 Alternatives

Doccano Label Studio

More powerful for complex linguistic annotations than many other open-source tools, but with a steeper learning curve.

💻 Platforms

Web (self-hosted)

💰 Pricing

Contact for pricing
Free Tier Available

Free tier: Fully open-source and free.

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