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Dydra vs OpenLink Virtuoso

Dydra: Hosted RDF triple store with SPARQL 1.1, valid-time indexing and an MCP endpoint on every repository. OpenLink Virtuoso: Hybrid SQL/RDF engine that runs many of the largest public SPARQL endpoints.

key differences

  • Licensing: Dydra is proprietary (Proprietary (hosted service)); OpenLink Virtuoso is open source (copyleft) (GPL-2.0 (Open Source Edition); commercial edition proprietary).
  • OpenLink Virtuoso is built for larger datasets (≤ 1 PB) than Dydra (≤ 10 TB).
  • Horizontal scaling is native in Dydra and addon in OpenLink Virtuoso.
  • Transactions: Dydra offers limited ACID; OpenLink Virtuoso offers full.
  • Only Dydra has time travel.
  • Only OpenLink Virtuoso has transactions, full-text search, geospatial, triggers, stored procedures.
  • Dydra has a serverless option; OpenLink Virtuoso does not.

choose dydra for

  • +Hosted linked-data and knowledge-graph backends
  • +Publishing RDF datasets with a public SPARQL endpoint
  • +Time-windowed queries over sensor or tick data modelled as RDF
  • +Giving LLM agents structured access to a knowledge graph

best at · Knowledge graph, Traversal, Time-series

choose virtuoso for

  • +Public Linked Open Data endpoints
  • +Large RDF datasets in life sciences
  • +Hybrid SQL plus RDF data integration
  • +Semantic web publishing

best at · Knowledge graph, OLAP, Content

DydraHosted RDF triple store with SPARQL 1.1, valid-time indexing and an MCP endpoint on every repository.
OpenLink VirtuosoHybrid SQL/RDF engine that runs many of the largest public SPARQL endpoints.
overview
Primary model
RDF / Triple Store
RDF / Triple Store
Also supports
Graph
Relational, XML
Type
Managed service
Database engine
Status
Active
Active
Developer
Datagraph GmbH
OpenLink Software
First release
2010
1998
Latest version
–
7.2.17 (May 7, 2026)
License
ProprietaryProprietary (hosted service)
Open source (copyleft)GPL-2.0 (Open Source Edition); commercial edition proprietary
Free tier
✓
✓
popularity
WhichDB Score
0.0
19.5
Rank
#721
#167
GitHub stars
–
976
Stack Overflow questions
–
533
scale & guarantees
Comfortable data size
Medium (≤ 10 TB)
Large (≤ 1 PB)
Horizontal scaling
Native
Addon
Multi-region
None
None
ACID
Limited
Full
Consistency
Strong
Strong
Schema
Schemaless
Flexible
Architecture
Serverless, Distributed
Single node, Client server, Distributed
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 1.1, GraphQL, score
SPARQL, SQL, SPASQL
Client languages
Ruby, Python, JavaScript, Java, Clojure, Common Lisp
ODBC, JDBC, Python, PHP, Jena/RDF4J adapters
Best for
Knowledge graph, Traversal, Time-series
Knowledge graph, OLAP, Content, Metadata
Add more to this comparisonNot sure either fits? Try smart match

Dydra vs OpenLink Virtuoso: FAQ

What is the difference between Dydra and OpenLink Virtuoso?

Dydra: Hosted RDF triple store with SPARQL 1.1, valid-time indexing and an MCP endpoint on every repository. OpenLink Virtuoso: Hybrid SQL/RDF engine that runs many of the largest public SPARQL endpoints. Licensing: Dydra is proprietary (Proprietary (hosted service)); OpenLink Virtuoso is open source (copyleft) (GPL-2.0 (Open Source Edition); commercial edition proprietary). OpenLink Virtuoso is built for larger datasets (≤ 1 PB) than Dydra (≤ 10 TB). Horizontal scaling is native in Dydra and addon in OpenLink Virtuoso.

When should I choose Dydra over OpenLink Virtuoso?

Choose Dydra for hosted linked-data and knowledge-graph backends; publishing RDF datasets with a public SPARQL endpoint; and time-windowed queries over sensor or tick data modelled as RDF. Choose OpenLink Virtuoso for public Linked Open Data endpoints, large RDF datasets in life sciences and hybrid SQL plus RDF data integration.

Is Dydra or OpenLink Virtuoso more popular?

OpenLink Virtuoso ranks #167 on the WhichDB Score (19.5/100) and Dydra ranks #721 (0.0/100). Popularity is not fit: check the requirements that matter for your project.

Are Dydra and OpenLink Virtuoso open source?

No. Dydra is proprietary, closed-source software. Yes. OpenLink Virtuoso is open source. License: GPL-2.0 (Open Source Edition); commercial edition proprietary.