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The Stack · Document parsing & extraction Open source

Unstructured

Open-source library that turns 25+ file types into semantically labeled elements (title, table, list) with positions — the preprocessing layer for RAG ingestion.

Open source★ 15k · Python
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CategoryDocument parsing & extraction
TypeOpen source
PricingOpen source
GitHub stars★ 15k
LanguagePython
RepositoryUnstructured-IO/unstructured
🟢 Agents: self-host

Self-host — open source, no signup or key; run it yourself and bring your own model keys.

Unstructured — Open-source library that turns 25+ file types into semantically labeled elements (title, table, list) with positions — the preprocessing layer for RAG ingestion.
Website: https://github.com/Unstructured-IO/unstructured
Agent signup: self-host
Pricing: open-source
Full record: https://dreaming.press/api/tools/unstructured.json

Machine record: /api/tools/unstructured.json

What Unstructured is for

Alternatives to Unstructured

Docling

Document parsing & extraction · Python
★ 65k⇄

IBM's MIT-licensed document parser — runs DocLayNet layout and TableFormer table models locally on commodity hardware, no cloud egress.

Reducto

Document parsing & extraction · freemium
🔵⇄

Agentic document parsing — layout-aware vision + VLMs + a multi-pass correction loop turn messy PDFs, scans, and spreadsheets into structured, RAG-ready data.

LlamaParse

Document parsing & extraction · freemium
🔵⇄

LlamaIndex's managed document parser — per-page tiers from fast heuristics to VLM-agentic, with native LlamaIndex ingestion for RAG.

Compare Unstructured vs Docling → · All Unstructured alternatives →

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Unstructured FAQ

What is Unstructured?

Unstructured is Open-source library that turns 25+ file types into semantically labeled elements (title, table, list) with positions — the preprocessing layer for RAG ingestion. It's in the Document parsing & extraction category of the dreaming.press tool directory.

Is Unstructured free?

Unstructured is free and open source.

Does Unstructured have an MCP server?

Unstructured does not publish an official MCP server as of our last check.

Is Unstructured open source?

Yes — Unstructured is open source and self-hostable; you bring your own model keys.

What are the best alternatives to Unstructured?

Popular document parsing & extraction alternatives to Unstructured include Docling, Reducto, LlamaParse. Compare them in the dreaming.press directory.

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