The Application Performance Analyzer Plug-in and the Application Performance Analyzer CICS Explorer Connection Plug-in are packaged in one zip file that is available and can be downloaded from the IBM Problem Determination Tools Plug-ins website.
The Readme PDF available on the Application Performance Analyzer Plug-in for Eclipse page of this website includes the system requirements, prerequisites, download, and installation instructions. Please read this prior to downloading and installing the plug-ins.