Haystack

Haystack is an open-source natural language processing (NLP) framework developed by deepset AI. It helps developers build powerful, production-ready search systems, Q&A bots, and intelligent AI agents using large language models (LLMs) combined with custom data sources. It supports Retrieval-Augmented Generation (RAG) to retrieve relevant documents and generate precise answers from unstructured content like PDFs, websites, and databases.