7 Best HelixDB Alternatives (Self-Hosted)
The best self-hosted alternatives to HelixDB.
HelixDB is an open-source OLTP graph-vector database built in Rust that runs directly on object storage. It unifies graph, vector, and document data models in a single engine, making it a strong fit for RAG pipelines, AI agents, and knowledge-graph applications. With over 5,700 GitHub stars and an Apache-2.0 license, HelixDB delivers ACID transactions, SQL-like queries, and native vector similarity search without a separate vector index.