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SPECIFICTION
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Mulgara

code.mulgara.org

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Spec score 7.4 #20 of 26 in RDF Databases

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. Listed capabilities include native RDF, reasoning, federated queries, full-text search, datatypes, multiple databases per server, large storage, streamed results, and on-disk joins. The project also lists transactions, clustering, store-level fail-over, permanent integrity, low memory requirements, and multi-processor support. Connectivity options include Sesame SAIL API, JRDF, SOAP, HTTP, and a Software Developers Kit. A standalone server provides a Web UI, SPARQL and TQL HTTP services, REST interfaces, web services, and a tutorial; TQL permits CRUD operations while SPARQL is query-only. Mulgara can run standalone or as a WAR in a Java web server. It supports RDF/XML, N-Triples, and N3, and imports compressed or uncompressed files. The latest named release is v2.1.13. Source code uses Open Software License v. 3.0.

Spec sheet

Purpose
Mulgara stores metadata and creates relationships between it.Read 8 Oct 2026 · code.mulgara.org
Platforms
The overview lists Windows NT, Windows 2000 and XP, UNIX, Linux, Solaris, Mac OS X, and IRIX.Read 8 Oct 2026 · code.mulgara.org
Deployment
Mulgara can be run as a standalone server or deployed as a WAR in a Java web server.Read 7 Oct 2026 · code.mulgara.org
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.Read 7 Oct 2026 · code.mulgara.org
License
The project page says Mulgara source code is licensed under the Open Software License, version 3.0.Read 8 Oct 2026 · code.mulgara.org
Administration
The overview describes near-zero administration and web-based configuration and monitoring tools.Read 8 Oct 2026 · code.mulgara.org
Connectivity
Listed connectivity options include Sesame SAIL API, JRDF, SOAP, HTTP, and an SDK.Read 8 Oct 2026 · code.mulgara.org
Download
The downloads page names v2.1.13 as the latest release and offers binary and source archives.Read 7 Oct 2026 · code.mulgara.org
Downloads
The downloads page names v2.1.13 as the latest release and offers binary, full binary, and source archives.Read 8 Oct 2026 · code.mulgara.org
Features
The overview lists native RDF support, full-text search, datatype support, and multiple databases per server.Read 8 Oct 2026 · code.mulgara.org
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.Read 8 Oct 2026 · code.mulgara.org
Notable limitation
The downloads page says development Subversion files may not be stable and should be accessed only by people actively developing the code.Read 8 Oct 2026 · code.mulgara.org
RDF and queries
It stores metadata as RDF subject-predicate-object statements and supports SPARQL and TQL queries.Read 8 Oct 2026 · code.mulgara.org
Reliability
The overview lists full transaction support, clustering, store-level fail-over, and permanent integrity.Read 7 Oct 2026 · code.mulgara.org
REST interfaces
A standalone server provides SPARQL and TQL REST interfaces, and the TQL interface permits CRUD operations while SPARQL is query-only.Read 7 Oct 2026 · code.mulgara.org
Scale
The overview lists large storage capacity, multi-processor support, low memory requirements, on-disk joins, and streamed query results.Read 8 Oct 2026 · code.mulgara.org
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.Read 8 Oct 2026 · code.mulgara.org
Transactions
The overview lists full transaction support, clustering, store-level fail-over, and permanent integrity.Read 8 Oct 2026 · code.mulgara.org
Web interface
A default standalone server configuration includes a Web UI, SPARQL HTTP service, TQL HTTP service, web services, and a tutorial.Read 8 Oct 2026 · code.mulgara.org
Web services
A default standalone server configuration provides a SPARQL HTTP service, TQL HTTP service, web services, user interface, and tutorial.Read 7 Oct 2026 · code.mulgara.org

Strong points and limits

Strong points

  • SPARQL and TQL query support
  • Reasoning and federated queries listed
  • Standalone or Java WAR deployment
  • Web UI and REST interfaces included
  • Open-source and free

Limits

  • Self-hosted deployment requires administration
  • Latest named release is v2.1.13
  • Development Subversion files may be unstable
  • TQL and SPARQL have different operation scopes

Who it suits

Mulgara suits teams needing self-hosted RDF storage, semantic queries, and server-side deployment across Linux, macOS, Windows, or web environments. Its listed interfaces support both applications and administration.

Verdict

Mulgara provides a broad RDF store with semantic querying, deployment flexibility, and server reliability features. Review the release status and self-hosting requirements before building around it.

Where Specifiction places it

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