MOAT Server is a application that serves tag meanings (in HTML, JSON or RDF/XML, using content negociation) for any Tag you request. The server is shipped without any data, which means that users have first to define meanings for their tags (thanks to the clients they use, that will then update the server information) to efficiently use it, using data available on the Semantic Web, especially from the Linked Data initiative.
The YQL platform provides a
single endpoint service that enables developers to query,
filter and combine data across Yahoo! and beyond. YQL
exposes a SQL-like SELECT syntax that that is both familiar
to developers and expressive enough for getting the right
data
"The YQL platform provides a single endpoint service that enables developers to query, filter and combine data across Yahoo! and beyond. YQL exposes a SQL-like SELECT syntax that that is both familiar to developers and expressive enough for getting the right data"