Ontop vs Virtuoso
Ontop is a rdf database; Virtuoso is a multiple database. Ontop (2009, Apache-2.0, Java) ranks #18 this month; Virtuoso (1998, GPL-2.0, C) ranks #43.
| Attribute | Ontop | Virtuoso |
|---|---|---|
| At a glance | ||
| Rank | #18 | #43 |
| Score | 57.0 | 49.1 |
| GitHub stars | 978 | 975 |
| Popularity | 58.4 | 62.4 |
| Activity | 49.4 | 44.4 |
| Community | 65.6 | 36.0 |
| Research | 54.8 | 53.6 |
| Fundamentals | ||
| Description | A Virtual Knowledge Graph system that exposes relational databases as RDF knowledge graphs, translating SPARQL queries into SQL without moving data. Uses R2RML mappings and lightweight ontologies. | A multi-model database supporting relational, RDF, and property graph data. Supports horizontal scaling, SPARQL and SQL queries. Available in open-source and proprietary enterprise editions. |
| Vendor | Ontopic | OpenLink Software |
| Model | RDF | Multiple |
| Kind | query-engine | database |
| Category | Established | Enterprise |
| First released | 2009 | 1998 |
| Status | active | active |
| License | Apache-2.0 | GPL-2.0 |
| Written in | Java | C |
| Query languages | SPARQL | SQL, SPARQL |
| gdotv support | no | yes |
Feature scores — not surveyed for Ontop
| Feature | Ontop | Virtuoso |
|---|---|---|
| Community & Business | ||
| Active development | — | ✓ |
| Commercial support | — | ✓ |
| Live community | — | ✓ |
| Open Source | — | ✓ |
| Pricing | — | ✓ |
| Trendiness | — | · |
| Deployment | ||
| Containerization | — | ✓ |
| Work as dedicated instance | — | ✓ |
| Work as embedded | — | · |
| Testing in-memory version | — | · |
| Platform | ||
| Operating on Linux | — | ✓ |
| Operating on Windows | — | ✓ |
| SaaS offering | — | ✓ |
| Operations | ||
| Automatic updates | — | · |
| Client side caching | — | · |
| Data versioning support | — | · |
| Live backups | — | ✓ |
| Distribution | ||
| Cluster Re-balancing | — | · |
| Data Distribution | — | ✓ |
| High-Availability | — | · |
| Query Distribution | — | ✓ |
| Replication support | — | ✓ |
| Developer Experience | ||
| Data types defined | — | · |
| Logging/Auditing | — | ✓ |
| Object-Graph Mapper | — | · |
| Reactive programming | — | · |
| Documentation up-to-date | — | 0.5 |
| Binary protocol | — | · |
| CLI | — | ✓ |
| GUI | — | ✓ |
| Data Model | ||
| Multi-database | — | ✓ |
| Graph-native data | — | · |
| REST API | — | ✓ |
| Query Language | — | ✓ |
| Transactions | ||
| Granular locking | — | ✓ |
| Multiple isolation levels | — | ✓ |
| Read committed transaction | — | ✓ |
| Transaction support | — | ✓ |
| Schema & Security | ||
| Constraints | — | ✓ |
| Schema support | — | · |
| Secondary indexes | — | ✓ |
| Server side procedures | — | ✓ |
| Triggers | — | ✓ |
| Authentication | — | ✓ |
| Authorization | — | ✓ |
| Data encryption | — | · |
Links
- Ontop · website · github · full profile
- Virtuoso · website · github · full profile