Thomson Reuters on OA in Web of Science…
The Web of Science [has] more than 12% of its core collection database in Open Access journals, many with direct, full-text links to open content (see Figure 1).”
Fig. 1: “Open Access Titles in the Web of Science by Discipline & Geography” (SOURCE: Thomson Reuters Web of Science)
The total of 72 OA titles in arts & humanities (all in English?) is comparable to Scopus. Scopus had 60 OA arts & humanities titles in English at June 2015, a fact discoverable via their new OA tagging. Though, after sorting, that Scopus category also included such tres arty titles as Canadian Journal of Speech-Language Pathology, Journal of Biomedical Discovery and Collaboration and Asian Social Science.