Press Releases

OpenLink Releases Virtuoso 6.1.2 (Open Source Edition)

Virtuoso 6.1.2 Enables Organizations to cost-effectively Develop, Integrate, and Deploy SOA and Event-Driven solutions

Burlington, MA - July 09, 2010 - OpenLink Software, Inc., technology leader in the development and deployment of secure, high-performance database connectivity middleware, today announced the availability of Virtuoso 6.1.2 (Open Source Edition), the company's multi-model data server.

Designed for the emerging challenges such as Data Silo cost reduction and Web scale distributed data access, management, and integration, the product includes enhancement across the following functionality realms:

Database engine

  • FOAF+SSL based authentication for ODBC, JDBC, OLEDB, and ADO.NET client connections
  • support for following http redirects automatically
  • extra graph delta-engine functions with regards to diff, iteration over dictionary, and obtaining the biggest possible iri_id on given 32-/64-bit platform
  • initial support for Python Runtime hosting via bif_python_exec
  • client- and server-side Semantic Pingback APIs
  • HTTP, SOAP, XML-RPC when used with proxies and reverse-proxies
  • Conductor UI for handling FOAF+SSL WebIDs for ODBC/SQL session logins
  • support for BIGINT in parameter marshalling


  • Sponger cartridges for CSV,, FaceBook, OpenGraph, Idiomag, Tumbler, Vimeo,,, and others
  • rdfs:label to default IFP based inference Rule
  • initial support for OData's Atom and JSON feed formats with regards to Linked Data Graph Serialization
  • support for gz and zip compressed CSV and parser strict mode option
  • optimization for large descriptions on about page
  • Enhanced iSPARQL using new internal RDF store for speed, browser fixes, and cosmetic changes

Native Providers for Jena, Sesame 2, and Sesame 3

  • Added support for creating ruleset
  • Added support for inference graph
  • Added support for inference and query execution
  • Added support for query engine interface, so Jena provider now supports new query execution modes
  • Added support for using Virtuosodatasource

ODS Applications

  • Added OpenID 2.0 login and registration
  • Added FOAF+SSL registration for users pages (JSP, PHP, VSP, etc.)
  • Added FOAF+SSL based ACLs for shared resources
  • Added GoodRelations based Offers as part of Profile Manager
  • Added support for associating multiple X.509 certificates with a single WebID
  • Added Relationship Ontology enhancements to Profile Manager
  • Added photo and audio upload for JavaScript, VSP, PHP, and JSP pages
  • Added Client and Server support for PubSubHubbub protocol

About OpenLink Software

OpenLink Software is a privately held software company with offices in the U.S.A., United Kingdom, Nigeria, and Bulgaria. It has been the leading provider and technology innovator in the universal data access middleware market since 1993, and over 10,000 companies currently use its products worldwide.

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Helen Heward-Mills,
OpenLink Software, Inc.
Tel: 781 273 0900