LinkedDataHub vs Protégé
LinkedDataHub
atomgraph.github.ioProtégé
protege.stanford.eduSide by side
| Figure | LinkedDataHub | Protégé |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 1 |
| Spec score · Knowledge Graph Software | 8.8 (#5) | 8.5 (#8) |
| Documentation depth | Documentation covers administration, CLI, configuration, data models, dataspaces, HTTP API, imports, triplestores, stylesheets and user tutorials. | Official documentation includes installation, getting started, views, menus, class-expression syntax, FAQs, tutorials, user guides, and developer documentation. |
| Extensibility | Custom Docker images, Java 21 Maven overlays, Jersey 3 REST resources, Apache Jena 6 components and Saxon XSLT extensions are documented. | Protégé Desktop is written in Java and uses a plug-in architecture for extensions. |
| Purpose | LinkedDataHub is an open-source, low-code platform for managing data, creating visualizations, and building apps on RDF knowledge graphs. | Protégé is an ontology editor used to build and manage ontologies. |
| Release news | An October 5, 2026 announcement describes the open-source 2.0 edition with faceted search, parallax navigation and multiple SPARQL-result layouts. | GitHub records Protégé Platform 5.6.9 as released on March 7, 2026. |
| Self-hosting | Deployment uses Docker and Docker Compose, with local, on-premises and cloud options documented. | WebProtégé can be built with Maven or run with Docker and MongoDB on a user-controlled server. |
| Support | The documentation lists a mailing list, issue reporting, and support contact as support channels. | User and developer mailing lists are monitored by Protégé team members and experienced community users, but subscription is required before posting. |
| What it does | LinkedDataHub is a low-code platform for managing RDF knowledge graphs, creating visualizations and building applications. | Protégé is an ontology editor for creating and managing OWL ontologies and knowledge models. |
Plans
In their own words
LinkedDataHub
LinkedDataHub is an open-source, low-code platform for managing data, creating visualizations, and building applications on RDF knowledge graphs. It can also operate as an RDF-native content management platform. The interface includes UI components, SPARQL templates for creating and editing content, and SPIN and SHACL constraints for validating incoming data. CSV and RDF imports are supported, with SPARQL CONSTRUCT used for mapping or transformation. Authentication supports WebID and OpenID Connect with Google and ORCID. WAC permissions cover read, write, append, and control access. Git-backed document history is available through Memento. The platform exposes a SPARQL endpoint and read-write Linked Data API, serving documents as HTML or RDF from the same URIs. It uses Apache Jena Fuseki by default, supports compatible SPARQL 1.1 triplestores, and runs locally with Docker Compose. The project is self-hosted under Apache 2.0.
Protégé
Protégé is a free ontology editor for building and managing ontologies, offered as Protégé Desktop and the browser-based WebProtégé. Both editions support OWL 2 and are described as cross-compatible. WebProtégé supports collaborative viewing and editing, with sharing, permissions, threaded discussions, watches, email notifications, and revision history. Ontologies can be uploaded and downloaded in formats including RDF/XML, Turtle, OWL/XML, and OBO. Protégé Desktop connects directly to description logic reasoners such as HermiT and Pellet. It can keep multiple ontologies in one workspace and provides structure visualization, inference explanations, and refactoring operations. Desktop is written in Java and can be extended with plug-ins. The project provides documentation including FAQs, tutorials, user guides, and developer documentation. Free support is available through mailing lists monitored by team members and experienced community users; users must subscribe before posting. The project says researchers, organisations, and governments worldwide use Protégé. Desktop is community maintained, with Damien Goutte-Gattat identified as its current primary maintainer.