This service delivers (most of) the datasets held at CeSAM Virtual Observatory Server. In addition to the default (nonstandard) way of just appending accrefs to the get access URL, there is also a very simple datalink service here that, for each dataset, essentially just gives the dataset itself and possibly a preview. More advanced datalink services might be available.

Some datasets may be embargoed, in which case the access yields a 403. Credentials for individual files may be obtained by contacting the site operators.