omnigraphLakehouse graph database for agent context — graph, vector and full-text retrieval fused in one runtime on branchable Lance/S3 storage; agent fleets write on isolated branches and merge Git-style.
Why switchBoth are lakehouse/object-store graph databases aimed at agent context; omnigraph fuses graph+vector+full-text in one runtime, hydradb is a pure Cypher/GraphBLAS graph with Neo4j wire compatibility.
Full comparison → FalkorDBLow-latency, multi-tenant property graph database that runs queries as sparse-matrix linear algebra (GraphBLAS); OpenCypher over the Redis protocol, built for GraphRAG and agent memory.
Why switchBoth execute graph traversal as GraphBLAS sparse-matrix algebra with OpenCypher; HydraDB is object-store-native and distributed over S3, FalkorDB an in-memory, Redis-protocol server.
Full comparison → helix-dbRust OLTP graph database on object storage with native vector and BM25 search: property graph, traversal-prefiltered ANN and full-text in one transactional engine; Rust, TS, Go, Python SDKs.
Why switchBoth are Rust graph databases built on object storage. hydradb speaks OpenCypher and Neo4j Bolt for drop-in compatibility; HelixDB fuses vector and BM25 search into the graph engine for agent retrieval.
Full comparison → latticedbEmbedded single-file graph database in Zig: graph traversal, HNSW vector search and BM25 full-text in one query language, plus a durable event log — built for Graph RAG and local agent memory.
Why switchOpposite ends of the same need: latticedb is an embedded single-file graph+vector+BM25 store, hydradb is a distributed S3-backed cluster — pick by whether the graph outgrows one process.
Full comparison → pgGraphPostgreSQL extension adding graph search, traversal and shortest-path over your existing tables — a derived graph index queried from plain SQL, no separate graph DB or query language. Rust.
Why switchpggraph adds graph traversal to tables you already have in Postgres; hydradb is a dedicated graph engine — choose pggraph if the data lives in Postgres, hydradb if the graph is the primary store.
Full comparison →