HelixDB

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rag-retrieval web freemium open source
graph-database vector-database rust RAG API

Overview

Added 03-31-2026

HelixDB is a graph-vector database built in Rust that stores and queries connected data with vector embeddings. It compiles graph and vector queries for ridiculously fast performance while scaling infinitely. Perfect for developers building recommendation engines, knowledge graphs, or any app that needs to understand relationships between data points.

Key Features

  • Rust-built engine makes your queries fly faster
  • Compiles graph queries instead of interpreting them slowly
  • Handles vectors and relationships in one database
  • Scales from laptop to enterprise without rewriting
  • SSD-optimized storage that doesn't eat your RAM

Use Cases

  • Build recommendation engines that actually understand user preferences
  • Create knowledge graphs for AI that remember connections
  • Power fraud detection by mapping suspicious transaction patterns
  • Build social networks that suggest relevant friend connections
  • Analyze supply chains to find bottlenecks quickly

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Pricing

Free For prototyping
Free
Prices as of March 2026