Mozilla Firefox. Mozilla Firefox. Mafia Wars Game on Facebook (12) SIMILE. SIMILE (Semantic Interoperability of Metadata and Information in unLike Environments) was a joint research project run by the World Wide Web Consortium (W3C), Massachusetts Institute of Technology Libraries and CSAIL and funded by the Andrew W.
Mellon Foundation. The project ran from 2003 to August 2008. It focused on developing tools to increase the interoperability of disparate digital collections, much of SIMILE's technical focus is oriented towards Semantic Web technology and standards such as Resource Description Framework (RDF). History SIMILE stands for Semantic Interoperability of Metadata and Information in unLike Environments.