## Information Retrieval Tech Stack **Pure Vector DBs** - Pinecone - QDrant - Milvus / Zilliz - Weaviate - Turbopuffer - MyScale **Open Source search engines** - Solr - Elasticsearch - OpenSearch - Vespa **Libraries** - Annoy, - FAISS, - NMSLib - HNSWLib - Lucene - Chroma - (a million others) - https://github.com/castorini/pyserini/ **Open Source DBs** - Redis - PGVector - Cassandra, Mongo, etc etc (every DB seems to be getting its vector index :wink: ) **Cloud solutions** - Google Vertex - Azure AI Search