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Weaviate

Open-source vector database with GraphQL API and hybrid search capabilities. Build AI applications with knowledge graphs, semantic search, and agent memory. Self-hosted or cloud deployment options with strong community support.

Founded 2019
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Weaviate
Vector Databases & Memory
Open-source vector database with GraphQL API, hybrid search combining vectors and keywords, and built-in multi-tenancy. Self-host or use managed cloud. Supports multiple vector indexes (HNSW, flat) and integrates with major LLM providers.
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