// category · 11 tools · 8 open source
Vector Databases
Stores for embeddings and agent memory — managed or self-hosted — powering retrieval, semantic search and long-term recall.
Milvusmilvus.ioCloud-native vector database designed for billion-scale similarity search, with a managed Zilliz service.Vector DatabasesOpen source★ 46.3k
LanceDBlancedb.comEmbedded, multimodal vector database built on the Lance columnar format.Vector DatabasesOpen source★ 11.6k
Qdrantqdrant.techHigh-performance vector search engine written in Rust with rich payload filtering.Vector DatabasesOpen source★ 34.9k
Chromatrychroma.comDeveloper-friendly open-source embedding database that runs embedded, as a server or in Chroma Cloud.Vector DatabasesOpen source★ 29.4k
Weaviateweaviate.ioOpen-source vector database with hybrid search, built-in vectoriser modules and a managed cloud.Vector DatabasesOpen source★ 16.9k
Zepgetzep.comManaged memory and context platform for agents that turns chats and business data into a temporal knowledge graph, built on the open-source Graphiti engine.Vector DatabasesFreemium★ 4.9k
Mem0mem0.aiMemory layer for AI agents that extracts and recalls user facts across sessions.Vector DatabasesOpen source★ 66.6k
Graphitihelp.getzep.comOpen-source Python library from Zep for building temporal knowledge graphs that track when facts change, backed by Neo4j, FalkorDB or Amazon Neptune.Vector DatabasesOpen source★ 31.5k
pgvectorgithub.comPostgres extension for vector similarity search, letting you keep embeddings next to relational data.Vector DatabasesOpen source★ 23.2k
turbopufferturbopuffer.comServerless vector and full-text search built on object storage for low-cost search at large scale.Vector DatabasesPaidHN 7
Pineconepinecone.ioFully managed serverless vector database for similarity search at scale.Vector DatabasesFreemiumHN 1