Chroma
Chroma · Vector databases
Open-source embedding database with a minimal Python and JavaScript API, usable in-process, as a server or through Chroma Cloud
Apache-2.0Open sourceUsage-basedLocalSelf-hostedNov 2, 2026
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Milvus
Zilliz / LF AI & Data Foundation · Vector databases
Open-source vector database from Zilliz with Lite, Standalone and Distributed deployments, many index types and GPU acceleration
Apache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026
Neo4j
Neo4j, Inc. · NoSQL & key-value stores
Native property-graph database queried with Cypher, offered as a GPL community edition, a commercial enterprise edition and the AuraDB cloud service
GPL-3.0Open sourceFreemiumSelf-hostedBroken
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