Virtuoso is open source.

You may also want to have a look at Sesame (http://www.openrdf.org) and

at the ClioPatria environment (http://cliopatria.swi-prolog.org/home, see also http://www.few.vu.nl/~vbr240/publications/eswc2012supporting.pdf) that came out of the E-culture demonstrator of the ICSW2006.

G. Schreiber, A. Amin, M. van Assem, V. de Boer, L. Hardman, M. Hildebrand, L. Hollink, Z. Huang, J. van Kersen, M. de Niet, B. Omelayenko, J. van Ossenbruggen, R. Siebes, J. Taekema, J. Wielemaker, and B. Wielinga. MultimediaN E-Culture Demonstrator. In The Semnantic Web - ISWC 2006, Athens, Georgia, volume 4273 of LNCS, pages 951-958. Springer Verlag, November 2006. Winner Semantic Web Challenge 2006,

There is also Jena which is a Java Library for dealing with RDF which includes a triple store (http://jena.apache.org) and Apolda for linking tekst based data using Gate

www.researchgate.net/publication/4275797_Apolda_A_Practical_Tool_for_Semantic_Annotation/file/60b7d5187d29003a5d.pdf

Conference Paper Apolda: A Practical Tool for Semantic Annotation

Thank You Rogier.

Because of the Sales tab on the Virtuoso website I thought it requires a commercial license although i think it does if the application is industry.

well, regarding the other tools they are more server extensions where my concern is to look for more of a server with a support of Linked and Big data, may be enriched with analytics modules in a perspective of universal server.

Thank you gain Rogier for your useful info.

ODBC with PHP:

ODBC is a software driver system for connecting programming languages with data stores. It is a free and open source system , it attempts to standardize connection methods, such as functions and configuration, across programming languages and database query access (SQL standardization).

It works by acting as a twofold interface or connector design: First, as a programming language system to an ODBC system and second, as an ODBC system to a data storage system. Therefore, ODBC requires a programming-language-to-ODBC driver (for example, the PHP-ODBC Library) and an ODBC-to-data-storage-system driver (such as the MySQL-ODBC Library). This is in addition to the ODBC system itself, which handles the configuration of data sources and allows the ambiguity of data sources and programming languages.

PHP is a programming language, generally used as a server-side language for powering dynamic websites. It is flexible by being a dynamic and weakly typed language. It is oddly familiar to many developers because it was influenced by the C programming language. A free and open source programming language that appeared in 1995, you can use PHP with databases via a connector to generate XHTML and HTML for rendering in a web browser.

SQL is a cross-platform language for interrogating a data store. It is primarily used for relational databases, but it does have procedural, object-oriented, and object-relational extensions. Modern implementations of SQL can be found within MySQL, PostgreSQL, SQLite, DB2 (both commercial and Express-C editions), Microsoft SQL Server, OpenLink Virtuoso, FileMaker, and Microsoft Access, all of which you can connect to using programming languages like PHP through a connectivity system (ODBC).