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Kb is a local-first, hyper-relational knowledge base built in Prolog with content-addressable storage, time-travel versioning, and a Raylib-based GUI, developed as a Master's thesis prototype.
Fluree DB is an open-source, temporal graph database with git-like branching, integrated vector/text/geo search, fine-grained access control, and support for SPARQL, JSON-LD, and Open Cypher. It is optimized for AI agent memory and achieves high performance on billion-scale graphs.
BlitzGraph is a backend service for graph databases, designed as an AI-native alternative to Supabase tailored for LLM agents.
HelixDB is a graph-vector database built in Rust for knowledge graphs and AI memory, offering a unified platform that supports graph, vector, KV, document, and relational data models, with tools for easy local and cloud deployment.
PostgreSQL documentation introduces property graphs, a SQL/PGQ feature that allows querying relational data using graph pattern matching syntax, defined as read-only views over tables.
The author details their journey from a flat vector store to a graph database (FalkorDB) for AI memory, enabling multi-hop reasoning, temporal queries, and provenance tracking in their LocalClaw project.
A transparent comparison of three open-source AI memory backends (Atomic Memory, Mem0, Zep) covering license, setup, provider support, and unique features like AUDN classification.
pgGraph v0.1.1 is an open-source, high-performance graph traversal extension for PostgreSQL written in Rust, enabling graph superpowers for Postgres users.
A new open-source tool called Writ uses a hybrid retrieval pipeline with BM25, ONNX vectors, and Neo4j graph traversals to provide context rules for AI coding agents, reducing token bloat by 726x and enforcing plan approval via bash hooks.
A detailed architectural guide for building long-running AI agents that handle changing user preferences over time by combining a vector store, graph DB, and temporal edges instead of overwriting data.
A user shares a custom harness for Claude Code that uses RAG with a graph database and bash script hooks to prevent context stuffing, saving tokens.
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.