Mule Studio is a tag that's used to refer to the former MuleSoft's IDE product previous to the release of MuleSoft Anypoint Studio. This tag should be not be used for Anypoint Studio since its release 3.5.0 (May 20, 2014).
Refers to MuleSoft's former IDE, Mule Studio, which was replaced by Anypoint STudio in 2014. Mule Studio is a customized Eclipse environment that provides an IDE and other tools used to create Mule Applications and Anypoint Connector components.