Mulgara
Mulgara is an open-source semantic store for metadata and the relationships between it.
What Mulgara is
Mulgara is an open-source semantic store for metadata and the relationships between it. It represents data as RDF subject-predicate-object statements, queried with SPARQL or TQL, and lists reasoning support and federated queries. Supported RDF formats include RDF/XML, N-Triples, and N3. The project also lists full-text search, datatype support, multiple databases per server, and performance features such as on-disk joins and streamed query results. It can run as a standalone server or as a WAR in a Java web server. A default standalone setup includes a Web UI, SPARQL and TQL HTTP services, web services, and a tutorial; its REST interfaces allow query-only SPARQL access and CRUD operations through TQL. Mulgara is free and licensed under Open Software License v. 3.0. The downloads page names v2.1.13 as the latest release and offers binary and source archives. The project warns that development Subversion files may be unstable and intended only for active developers.
Good
- Supports RDF/XML, N-Triples, and N3
- Provides reasoning and federated query support
- Can run standalone or as a Java web-server WAR
- Includes SPARQL and TQL REST interfaces
Watch out
- Self-hosted deployment requires managing the server
- Development Subversion files may be unstable
- Latest named release is v2.1.13
Who it suits
Mulgara may suit developers or teams working with RDF metadata who need SPARQL or TQL queries, reasoning, or federated queries. It is geared toward users able to manage a standalone or Java web server deployment.
Verdict
Mulgara offers RDF storage and query capabilities with standalone and Java web-server deployment options. Its release and deployment details are worth considering before adopting it.
The facts
Each one read from Mulgara's own pages, with the date it was checked.
What it does
- Administration
- The overview describes near-zero administration and web-based configuration and monitoring tools.checked 8 Oct 2026
- Connectivity
- Listed connectivity options include Sesame SAIL API, JRDF, SOAP, HTTP, and an SDK.checked 8 Oct 2026
- Deployment
- Mulgara can be run as a standalone server or deployed as a WAR in a Java web server.checked 7 Oct 2026
- Download
- The downloads page names v2.1.13 as the latest release and offers binary and source archives.checked 7 Oct 2026
- Downloads
- The downloads page names v2.1.13 as the latest release and offers binary, full binary, and source archives.checked 8 Oct 2026
- Features
- The overview lists native RDF support, full-text search, datatype support, and multiple databases per server.checked 8 Oct 2026
- Import and export
- The TQL export command supports RDF/XML and N-Triples, while load supports compressed ZIP and gzip files as well as uncompressed files.checked 8 Oct 2026
- License
- The project page says Mulgara source code is licensed under the Open Software License, version 3.0.checked 8 Oct 2026
- Notable limitation
- The downloads page says development Subversion files may not be stable and should be accessed only by people actively developing the code.checked 8 Oct 2026
- Purpose
- Mulgara stores metadata and creates relationships between it.checked 8 Oct 2026
- RDF and queries
- It stores metadata as RDF subject-predicate-object statements and supports SPARQL and TQL queries.checked 8 Oct 2026
- Reliability
- The overview lists full transaction support, clustering, store-level fail-over, and permanent integrity.checked 7 Oct 2026
- REST interfaces
- A standalone server provides SPARQL and TQL REST interfaces, and the TQL interface permits CRUD operations while SPARQL is query-only.checked 7 Oct 2026
- Scale
- The overview lists large storage capacity, multi-processor support, low memory requirements, on-disk joins, and streamed query results.checked 8 Oct 2026
- Support
- The project site invites users to create an account to log tickets and interact with developers, and asks registrants to message the mailing list afterward.checked 7 Oct 2026
- Support and community
- The project home invites users to create an account to log tickets and interact with developers, then asks them to message the mailing list after registering.checked 8 Oct 2026
- Transactions
- The overview lists full transaction support, clustering, store-level fail-over, and permanent integrity.checked 8 Oct 2026
- Web interface
- A default standalone server configuration includes a Web UI, SPARQL HTTP service, TQL HTTP service, web services, and a tutorial.checked 8 Oct 2026
- Web services
- A default standalone server configuration provides a SPARQL HTTP service, TQL HTTP service, web services, user interface, and tutorial.checked 7 Oct 2026
Where it runs
- Platforms
- The overview lists Windows NT, Windows 2000 and XP, UNIX, Linux, Solaris, Mac OS X, and IRIX.checked 8 Oct 2026
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