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AllegroGraph vs RDFox

AllegroGraph: Lisp-built RDF and document knowledge graph with vector store, reasoning and LLM agents. RDFox: In-memory RDF store with incremental Datalog reasoning, now owned by Samsung.

key differences

  • AllegroGraph is built for larger datasets (≤ 1 PB) than RDFox (≤ 10 TB).
  • Horizontal scaling is native in AllegroGraph and none in RDFox.
  • Only AllegroGraph has full-text search, vector search, geospatial, json, stored procedures.
  • Only RDFox has in-memory.
  • RDFox can run embedded in your application process.

choose allegrograph for

  • +Neuro-symbolic AI and GraphRAG
  • +Healthcare and life-sciences knowledge graphs
  • +Intelligence and event analytics with spatio-temporal reasoning
  • +Entity-event knowledge graphs

best at · Knowledge graph, RAG, Vector search

choose rdfox for

  • +Rule-based decision and compliance engines
  • +On-device personal knowledge graphs
  • +Real-time knowledge-graph reasoning
  • +Product configuration and validation

best at · Knowledge graph, Embedded, Edge

AllegroGraphLisp-built RDF and document knowledge graph with vector store, reasoning and LLM agents.
RDFoxIn-memory RDF store with incremental Datalog reasoning, now owned by Samsung.
overview
Primary model
RDF / Triple Store
RDF / Triple Store
Also supports
Document, Vector
–
Type
Database engine
Database engine
Status
Active
Active
Developer
Franz Inc.
Oxford Semantic Technologies (Samsung Electronics)
First release
2004
2017
Latest version
9.1.0 (Oct 15, 2026)
7.7 (Sep 29, 2026)
License
ProprietaryProprietary (free edition with triple limit)
ProprietaryProprietary
Free tier
✓
—
popularity
WhichDB Score
16.1
3.4
Rank
#200
#438
GitHub stars
–
–
Stack Overflow questions
79
6
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Native
None
Multi-region
Read replicas
None
ACID
Full
Full
Consistency
Strong
Strong
Schema
Flexible
Schemaless
Architecture
Single node, Distributed, Client server
In memory, Single node, Embedded, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
—
Serverless
—
—
Embedded
—
✓
Edge
—
✓
Clouds
AWS
–
capabilities
Transactions
✓
✓
Joins
—
—
Secondary indexes
—
—
Full-text search
✓
—
Vector search
✓
—
Geospatial
✓
—
JSON
✓
—
Change data capture
—
—
Triggers
—
—
Stored procedures
✓
—
Materialized views
—
—
TTL / expiry
—
—
Pub/Sub
—
—
Columnar storage
—
—
In-memory
—
✓
Durable persistence
✓
✓
Compression
—
—
Encryption at rest
✓
—
Role-based access
✓
✓
Time travel
—
—
Branching
—
—
Online schema changes
✓
—
Streaming ingest
—
—
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SPARQL, Prolog, Lisp
SPARQL, Datalog, OWL 2 RL
Client languages
Java, Python, JavaScript, Common Lisp
Java, C++, Python (REST)
Best for
Knowledge graph, RAG, Vector search, Geo
Knowledge graph, Embedded, Edge, Real-time analytics
Add more to this comparisonNot sure either fits? Try smart match

AllegroGraph vs RDFox: FAQ

What is the difference between AllegroGraph and RDFox?

AllegroGraph: Lisp-built RDF and document knowledge graph with vector store, reasoning and LLM agents. RDFox: In-memory RDF store with incremental Datalog reasoning, now owned by Samsung. AllegroGraph is built for larger datasets (≤ 1 PB) than RDFox (≤ 10 TB). Horizontal scaling is native in AllegroGraph and none in RDFox. Only AllegroGraph has full-text search, vector search, geospatial, json, stored procedures.

When should I choose AllegroGraph over RDFox?

Choose AllegroGraph for neuro-symbolic AI and GraphRAG; healthcare and life-sciences knowledge graphs; and intelligence and event analytics with spatio-temporal reasoning. Choose RDFox for rule-based decision and compliance engines; on-device personal knowledge graphs; and real-time knowledge-graph reasoning.

Is AllegroGraph or RDFox more popular?

AllegroGraph ranks #200 on the WhichDB Score (16.1/100) and RDFox ranks #438 (3.4/100). Popularity is not fit: check the requirements that matter for your project.

Are AllegroGraph and RDFox open source?

No. AllegroGraph is proprietary, closed-source software. No. RDFox is proprietary, closed-source software.