Jul 25, 2026

Markup

Open-source annotation tool for transforming unstructured documents into structured data.
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Overview
What is Markup?

Markup is an open-source annotation tool that can be used to transform unstructured documents into structured formats for NLP and ML tasks, such as named-entity recognition. Markup learns as you annotate to predict and suggest complex annotations. It helps turn text into structured data without the hassle, rapidly building structured datasets from free-text for NLP and ML. Powered by GPT-4.

Open-source annotation tool for transforming unstructured documents into structured data.

Core Features
Transforms unstructured documents into structured formats
Supports NLP and ML tasks like named-entity recognition
Learns as you annotate to predict and suggest annotations
Powered by GPT-4
Popular Use Cases
  • Named-entity recognition
  • Building structured datasets from free-text
How to use
  • The provided content mentions needing to enable JavaScript to run the app. It also suggests starting with the documentation
  • signing in
  • or signing up. The core functionality involves annotating text to create structured data.
Product Timeline
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Pricing
Markup uses a Freemium pricing model. Pricing and features may change over time.
Free
$0
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Pro
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Team
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Enterprise
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Deal / Coupon
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Verification
Tool status
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Founder claimed
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Source
Official website / Community submitted
Related Tags
AI WritingContent GenerationResearchEmail WritingSummarizationRewritingAcademic ResearchBrowser ExtensionFreemium
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