The OPeNDAP IDL Client is an IDL tool which provides access to OPeNDAP data in IDL. IDL (a commercial data analysis and visualization package) is required. The client now uses the OPeNDAP C API(v-1.4.3) in place of the Ocapi 1.33.
Also note that IDL, as of version 8.2, has built-in support for OPeNDAP servers.