Pensoft Publishers (also known as: Pensoft) are a publisher of scientific literature based in Sofia, Bulgaria. It has published nearly 1000 academic and professional books and currently publishes 24 peer-reviewed open access scientific journals including ZooKeys, PhytoKeys, Check List, Comparative Cytogenetics, Journal of Hymenoptera Research, Deutsche Entomologische Zeitschrift, and Zoosystematics and Evolution.
Pensoft is part of the open-access publishing movement. The Creative Commons Attribution License (CC-BY) is used for all journal articles. In 2012, Pensoft established a partnership with Encyclopedia of Life called the EOL Open Access Support Project (EOASP) to financially support independent taxonomists, and taxonomists living in developing countries to publish their results in Pensoft journals