EnterpriseMetasearch is search software from Comcepta AG for federated search. From a single search box it queries several data sources at once and merges the hits into one result list. Duplicate hits are removed, and results can be weighted to suit the organisation. The vendor names internal and external search engines, databases such as Oracle, directory services such as LDAP, search indices such as Lucene, Solr and Elasticsearch, and SAP applications among the sources. It also offers document clustering, text mining and monitoring of the sources during operation. It is a Java application for Unix, Linux and Windows, with a web service interface and a Java API. The vendor also supplies it as an appliance or as software as a service.
Comcepta AG is based in Basel, Switzerland, and describes itself as self-financed. Switzerland is not in the EU but is an EFTA country with an EU adequacy decision. The vendor mentions no foreign owner. It does not say where data is hosted for the SaaS option, so ask the vendor. Running it yourself is possible.