Aptana Studio 3 Core Aptana Studio 3 Core holds the core set of plugins used to build the Aptana Studio 3 IDE/RCP. Currently it relies on consuming a pre-built FTP/FTPS/SFTP library as a dependency for building. This holds a commercial library, so the sources do not contain the JAR due to licensing restrictions. This set of plugins deals with providing support for web development: HTML, CSS, XML,