The architecture of Loterre is based on a triplestore connected with a browsing tool and searchable via a SPARQL interface and an API.

To offer its users access to terminologies, Loterre calls upon various open-source tools:

• a Jena-Fuseki Apache triplestore
• Skosmos, to allow resources to be browsed on line
• The Skosmos REST API to allow a distant software agent to query and recover data
• YASGUI for the formulation of SPARQL queries
• ezArk to simplify the distribution of ARK identifiers where necessary