2026 Best AI Knowledge Graph tools

D

data.world

AI Knowledge Graph

An enterprise data catalog for discovering, understanding, governing, and querying data.

P

Polygres

AI Knowledge Graph

Polygres is a PostgreSQL-based platform for agent workflows, combining graph traversal, vector search, and hybrid retrieval in one system. Self-host it or use managed cloud hosting to turn live database rows into queryable context for AI agents.

P

Polygraph

AI Knowledge Graph

Polygraph connects repositories into one working graph and preserves session context across handoffs, helping teams coordinate cross-repo development, debugging, and PR workflows.

G

GraphRAG

AI Knowledge Graph

GraphRAG is a research project and data pipeline for extracting structured information from unstructured text with language models, then using graph-based context to support question answering over private data.

N

Neo4j Graph Intelligence Platform

AI Knowledge Graph

Neo4j Graph Intelligence Platform connects data as a graph so teams can query relationships, analyze connected data, and build knowledge layers for AI systems. It supports fully managed cloud services and self-managed deployments.

T

TRM Labs

AI Knowledge Graph

Blockchain intelligence and AI-assisted investigations for agencies and financial institutions.

D

Diffbot

AI Knowledge Graph

Diffbot transforms unstructured public web content into structured data for AI applications. Its APIs and agent skills support web search, page extraction, crawling, entity resolution, natural-language processing, and Knowledge Graph research.

C

Cognee

AI Knowledge Base

Cognee is an open-source memory platform for AI agents and applications. It connects data across sources, builds connected memory using vector, graph, and relational storage, and makes that context available through SDK, cloud, or self-hosted deployments.

G

Graphiti

AI Knowledge Graph

Graphiti is an open-source GitHub project for building real-time knowledge graphs for AI agents. It provides a codebase that developers can inspect, extend, and contribute to through the repository’s development workflow.

M

Memgraph

AI Knowledge Graph

Memgraph is an in-memory graph database for GraphRAG, AI memory, agentic AI, and real-time graph analytics. It uses Cypher and provides tools for querying, visualization, algorithms, and streaming data workflows.

S

Stardog

AI Knowledge Graph

Stardog is an enterprise knowledge graph-powered semantic AI platform that unifies distributed data and adds ontology-based context for analytics, AI applications, and connected decision-making. It is available for on-premises and cloud enterprise deployments, with a free commercial license for exploration.

L

Lettria

AI Knowledge Graph

Graph-native document intelligence for regulated industries and complex enterprise knowledge.

F

FalkorDB

AI Knowledge Graph

FalkorDB is a Redis-based graph database for graph analytics, GraphRAG, agent memory, and other applications built on interconnected data. It helps technical teams structure and query relationships for AI applications, chatbots, fraud detection, and security analysis.

F

Fluree

AI Knowledge Base

Fluree is a hosted enterprise AI data platform that turns raw data into trusted, queryable knowledge graphs for AI, analytics, dashboards, apps, and agents. It supports connected, permissioned data workflows instead of scattered context.

D

DrDroid

AI Knowledge Graph

AI SRE agent connecting tools for incident response and remediation

C

Curiosity

AI Knowledge Graph

Search connected company data, build internal apps in Studio, and choose how your AI workflows are hosted.

S

Saphira AI

AI Knowledge Graph

AI agents for engineering teams analyzing and validating complex physical systems.

S

System

AI Knowledge Graph

Explore connected scientific evidence with an AI-powered graph, research applications, and APIs.

S

Sixtyfour

AI Knowledge Graph

AI intelligence infrastructure for sourced people and entity profiles

G

Graphlit

AI Knowledge Base

Context layer for AI agents with searchable, grounded content