
Haystack (deepset AI)
Haystack, developed by deepset AI, is an open-source natural language processing (NLP) framework that enables researchers to build search systems, question-answering applications, and document retrievers using state-of-the-art NLP models. Built on top of Hugging Face’s Transformer models, Haystack allows researchers to quickly prototype and deploy systems for neural search and question-answering. It’s especially useful for research teams working on semantic search, chatbots, and other NLP applications where fast, relevant information retrieval is necessary.