ARTERNAL | 3,978 followers on LinkedIn. The only complete sales solution to help you sell more art. Made for galleries, advisories and private sales. | ARTERNAL provides Revenue & Customer Relationship Management (CRM), Inventory Management, & Automated Administrative Tasks for art dealers, art gallery owners, advisories and their staff within one consolidated platform. We understand that increasing revenue and strengthening relationships are of the utmost importance, so we created a system with the art dealer's experience & needs in mind.