MarkItDown

Docling

docling-project/docling

Trending

IBM-born toolkit that converts PDFs, DOCX, PPTX and images into structured Markdown/JSON with layout and tables.

Unstructured

Unstructured-IO/unstructured

Popular

Open-source ETL library for partitioning and chunking dozens of document types for RAG pipelines.

MinerU

opendatalab/MinerU

Rising

High-accuracy PDF-to-Markdown/JSON extractor from OpenDataLab, strong on formulas, tables and Chinese docs.

LlamaParse

llamaindex.ai

LlamaIndex's hosted, LLM-powered document parser for complex PDFs, tables and charts.

Firecrawl

firecrawl/firecrawl

Trending

API and open-source crawler that turns websites into clean Markdown or structured data for LLMs.

Crawl4AI

unclecode/crawl4ai

Trending

Open-source async web crawler and scraper producing LLM-friendly Markdown, built on Playwright.

RAGFlow

infiniflow/ragflow

Trending

Open-source RAG engine with deep document understanding, chunk visualization and agent workflows.

GraphRAG

microsoft/graphrag

Microsoft's pipeline that builds a knowledge graph from documents to answer global, multi-hop questions.

LightRAG

HKUDS/LightRAG

Rising

Simple, fast graph-based RAG combining knowledge graphs with vector retrieval at lower cost than GraphRAG.