was jointly funded by the DARPA (under the DAML program) and the European Union's Information Society Technologies (IST) funding project. DAML+OIL was intended to be a thin layer above RDFS,with formal semantics based on a description logic (DL).

DAML+OIL is a particularly major influence on OWL; OWL's design was specifically based on DAML+OIL.

Semantic web standards