The IJOEM, DOAJ Seal, and Plan S

Influenced by the high penetration of the Internet throughout the world, Open Access (OA) publishing was officially born more than 15 years ago. The OA movement was begun to provide users with free access to scholarly publications for any lawful purposes.1 There are several types of OA. In “gold OA” journals, authors pay an article processing charge to publish in the journal. In “platinum OA” journals, authors do not need to pay for publication. Hybrid OA journals are a combination of subscription and gold OA models. Some OA journals provide immediate free access; others only after an embargo period of up to 3 years, which protects their subscription revenue.