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Mulgara
What it is
Mulgara is a free, open-source semantic store for metadata and relationships. It records information as RDF subject-predicate-object statements and supports SPARQL and TQL queries. The project lists native RDF support, reasoning, federated queries, full-text search, datatype handling, and support for RDF/XML, N-Triples, and N3. It can run as a standalone server or deploy as a WAR in a Java web server. A standalone setup provides a Web UI, SPARQL and TQL HTTP services, web services, and a tutorial, plus REST interfaces; SPARQL is query-only while TQL supports create, read, update, and delete operations. Other listed capabilities include multiple databases per server, large storage capacity, streamed results, on-disk joins, clustering, transaction support, and fail-over. Mulgara supports Windows, macOS, Linux, and web environments, with self-hosted deployment. The downloads page names version 2.1.13 as the latest release.
For and against
For
- Free and open source
- SPARQL and TQL query support
- Reasoning and federated queries
- Standalone or WAR deployment
- Multiple RDF formats supported
Against
- Self-hosted deployment required
- Development Subversion files may be unstable
- Latest listed release is version 2.1.13
The verdict
Mulgara offers a self-hosted RDF store with multiple query interfaces, formats, and server capabilities. Its open-source model suits technical users who can manage deployment and account for the project’s stated release caveat.
Who it suits
Mulgara suits developers and teams needing self-hosted RDF storage, querying, reasoning, or federated queries. It is relevant when the listed operating systems, interfaces, and open-source licensing fit the deployment.
On the record
- Administration
- The overview describes near-zero administration and web-based configuration and monitoring tools.code.mulgara.org · read 8 Oct 2026
- Connectivity
- Listed connectivity options include Sesame SAIL API, JRDF, SOAP, HTTP, and an SDK.code.mulgara.org · read 8 Oct 2026
- Deployment
- Mulgara can be run as a standalone server or deployed as a WAR in a Java web server.code.mulgara.org · read 7 Oct 2026
- Download
- The downloads page names v2.1.13 as the latest release and offers binary and source archives.code.mulgara.org · read 7 Oct 2026
- Downloads
- The downloads page names v2.1.13 as the latest release and offers binary, full binary, and source archives.code.mulgara.org · read 8 Oct 2026
- Features
- The overview lists native RDF support, full-text search, datatype support, and multiple databases per server.code.mulgara.org · read 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.code.mulgara.org · read 8 Oct 2026
- License
- The project page says Mulgara source code is licensed under the Open Software License, version 3.0.code.mulgara.org · read 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.code.mulgara.org · read 8 Oct 2026
- Purpose
- Mulgara stores metadata and creates relationships between it.code.mulgara.org · read 8 Oct 2026
- RDF and queries
- It stores metadata as RDF subject-predicate-object statements and supports SPARQL and TQL queries.code.mulgara.org · read 8 Oct 2026
- Reliability
- The overview lists full transaction support, clustering, store-level fail-over, and permanent integrity.code.mulgara.org · read 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.code.mulgara.org · read 7 Oct 2026
- Scale
- The overview lists large storage capacity, multi-processor support, low memory requirements, on-disk joins, and streamed query results.code.mulgara.org · read 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.code.mulgara.org · read 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.code.mulgara.org · read 8 Oct 2026
- Transactions
- The overview lists full transaction support, clustering, store-level fail-over, and permanent integrity.code.mulgara.org · read 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.code.mulgara.org · read 8 Oct 2026
