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Head-to-head · Knowledge Graph Software

Neo4j vs OpenLink Virtuoso

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Neo4j #1 in Knowledge Graph Software 9.3/10 Free plan · 14-day trial Free planFree trial✓ 0 of 4 features Visit Neo4j
OpenLink Virtuoso #8 in Knowledge Graph Software 8.1/10 Open source · 30-day trial Free trial✓ 0 of 4 features Visit OpenLink

Neo4j leads on 0 checks, OpenLink Virtuoso on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreNeo4j · 9.3/10
  • Free planonly Neo4j
  • Free trialboth

Neo4j scores higher on our rubric for knowledge graph software: 9.3 against 8.1 out of 10; our editors rank them #1 and #8.

Neo4j is the better fit for property-graph applications with strong developer tooling. OpenLink Virtuoso is the better fit for mature hybrid SQL and RDF deployments.

  • Neo4j fits best

    Property-graph applications with strong developer tooling

  • OpenLink Virtuoso fits best

    Mature hybrid SQL and RDF deployments

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Neo4j 9.3/10 Visit ↗ OpenLink Virtuoso 8.1/10 Visit ↗
At a glance
Editor score 9.3 8.1
Ranking #1 in Knowledge Graph Software #8 in Knowledge Graph Software
Best for Property-graph applications with strong developer tooling Mature hybrid SQL and RDF deployments
Pricing model Free plan + paid Free
Starting price — Free
Free plan ✓ (best) Not checked yet
Free trial 14 days 30 days
Free trial length 14 days 30 days
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web, Windows, macOS, Linux Windows, macOS, Linux
Support Tickets, Live chat, Community, Docs Tickets, Community, Docs
Compliance SOC 2, ISO 27001, GDPR, HIPAA GDPR
Integrations 10 integrations 8 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Neo4j 0/4 · OpenLink Virtuoso 0/4
Ontology modeling Not checked yet Not checked yet
Semantic reasoning Not checked yet Not checked yet
RDF/SPARQL support Not checked yet Not checked yet
Graph visualization Not checked yet Not checked yet
Specs
Import formats Not checked yet Not checked yet
Deployment Not checked yet Both
Query languages Cypher, GQL Not checked yet
Our review
Pros
  • Native nodes, relationships, properties, and Cypher queries
  • ACID transactions, clustering, failover, and horizontal scaling
  • Graph algorithms, vector search, connectors, and official libraries
  • Combines SQL, RDF quad storage, SPARQL, and relational RDF views
  • Supports replication, clustering, virtualization, and web-service deployment
  • Connects through ODBC, JDBC, ADO.NET, OLE-DB, GraphQL, and HTTP
Cons
  • Professional starts at $65 per GB per month
  • Business Critical requires a minimum 2GB cluster
  • Native property-graph focus may not suit RDF-first projects
  • Its broad scope may exceed the needs of narrow graph-only projects
  • Enterprise capabilities use custom licensing terms
  • Advanced deployments require database and data-integration expertise
Our verdict

Neo4j is a native property graph database for developers, data scientists, and organizations working with connected data. It stores nodes, relationships, and properties, then exposes them through the Cypher declarative query language.…

Read the review →

OpenLink Virtuoso is a cross-platform multi-model database and data integration platform for organizations working with relational, RDF, graph, XML, and federated data. It combines a relational SQL engine with native RDF quad storage,…

Read the review →
  1. Neo4jKnowledge Graph Software 9.3Free plan · 14-day trial
  2. OpenLink VirtuosoKnowledge Graph Software 8.1Open source · 30-day trial

Strengths and trade-offs

  • Neo4j — where it wins

    • Native nodes, relationships, properties, and Cypher queries
    • ACID transactions, clustering, failover, and horizontal scaling
    • Graph algorithms, vector search, connectors, and official libraries

    Where it doesn't

    • Professional starts at $65 per GB per month
    • Business Critical requires a minimum 2GB cluster
    • Native property-graph focus may not suit RDF-first projects

  • OpenLink Virtuoso — where it wins

    • Combines SQL, RDF quad storage, SPARQL, and relational RDF views
    • Supports replication, clustering, virtualization, and web-service deployment
    • Connects through ODBC, JDBC, ADO.NET, OLE-DB, GraphQL, and HTTP

    Where it doesn't

    • Its broad scope may exceed the needs of narrow graph-only projects
    • Enterprise capabilities use custom licensing terms
    • Advanced deployments require database and data-integration expertise
  • Neo4j9.3/10 · Free plan · 14-day trial

    A developer-focused property graph with broad tooling, cloud options, and AI-ready search.

    Visit Neo4jFull verdict →
  • OpenLink Virtuoso8.1/10 · Open source · 30-day trial

    A broad open-source platform for teams combining relational and RDF workloads.

    Visit OpenLinkFull verdict →

More comparisons

All knowledge graph software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update