The Behance PHP SDK by Behance allows API communication, useful to create an interface for portfolio creation. It includes authentication, installation with composer, and usage. Behance targets illustrators, graphic designers, and interactive artists.
Infradox serves up your archive of photo and video on a high volume basis. The Infradox API is actually two APIs: a "Partner API" and a "Back Office API." The partner API is, not surprisingly, for your partners so that they can connect live with your Infradox database. Responses are in XML.
Along with the rapid growth of video APIs, the marketplace of photo-related APIs continues to expand rapidly. Since we looked at 36 Photo APIs earlier this year, we've added nearly a dozen new ones, and there are now 47 APIs tagged "photo" in our web service directory.