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pg_knowledge_graph

Knowledge graph extension for PostgreSQL with graph algorithms and pgvector integration.

vector data type and ivfflat and hnsw access methods

vector	vector data type and ivfflat and hnsw access methods
vectorize	The simplest way to do vector search on Postgres
pgcontext	Vector, filter-aware HNSW, and hybrid retrieval over authoritative PostgreSQL tables.
pgmnemo	Single-plan multimodal agent memory for PostgreSQL
ruvector	SIMD-accelerated vector type and indexes with graph, solver, TDA, local embedding, and AI SQL functions.
avocado	AvocadoDB PostgreSQL extension for deterministic context compilation for AI agents.
neurondb	AI database extension for vector search, ML inference, hybrid search, and RAG in PostgreSQL.
pgedge_vectorizer	Asynchronous text chunking and embedding generation for PostgreSQL using background workers and pgvector.
pgturbohybrid	hybrid vector and BM25 search for PostgreSQL on top of pgvector
pg_llm	Integrates local and remote large-language models with chat, sessions, text-to-SQL, audit and vector-backed knowledge features.