Docling

Verdict: Open-source toolkit (from IBM Research, now LF AI) that converts PDFs, Office files and scans into clean Markdown/JSON for RAG and agents, with layout and table understanding.

Free (MIT open source) · Official site: https://docling-project.github.io/docling/ · source checked 2026-10-21 (HTTP 200)

GitHub repo · ★ 69.3k stars (as of 2026-10-21) · More open-source AI

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