Mainstream purpose-built vector databases include Milvus, Zilliz Cloud (fully managed Milvus), Qdrant, Weaviate, Pinecone, and Chroma. Besides specialized vector databases, many traditional relational databases add a vector plugin capable of performing small-scale vector searches. Such databases include Elasticsearch, MongoDB, and Pgvector.

Yes, MongoDB Atlas is a vector database. Atlas is a fully managed, multi-cloud developer data platform with a rich array of capabilities that includes text or lexical and vector search.

In addition to vector libraries and specialized vector databases, this year also saw almost all the major databases add vector capabilities to their feature set. Some examples include MongoDB, Neo4j, Couchdb and PostgreSQL.