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pgGraph is a high-performance, open-source graph traversal extension for PostgreSQL, written in Rust, designed to give AI agents fast relationship queries without migrating data to a separate graph database.
HelixDB is a new open-source database built in Rust that combines vector, graph, and other data models into a single engine, backed by Y Combinator. It aims to replace separate vector, graph, and application databases for AI stacks, offering native vector search, graph traversal, and MCP support.
The article promotes a custom-built 3D knowledge graph tool inspired by Andrej Karpathy, claiming to surpass standard note-taking apps like Notion and Obsidian by creating a persistent, AI-connected 'second brain'.
Codemix open-sources @codemix/graph, a type-safe, CRDT-backed graph database with TypeScript-native schema validation and realtime offline-first sync via Yjs.