LlamaIndex

LlamaIndex is a data framework that bridges large language models with external data, enabling building RAG pipelines and document agents. It ingests complex documents via agentic OCR, extracts tables, charts, and handwriting, then indexes content for semantic search. Features include structured schema extraction, auto-correction loops, and multi-modal support. Tailored for developers and solopreneurs automating due diligence, invoice processing, technical search, or customer support. It offers both an open-source library and a cloud service.