PDSE, or Program Development Support Environment, is a term used in software engineering to refer to tools and software that are used to assist in the development, testing, and maintenance of computer programs. Some common synonyms for PDSE include Integrated Development Environment (IDE), Software Development Kit (SDK), Application Programming Interface (API), and Code Editor. Each of these synonyms describes a different aspect or functionality of the tools that make up a PDSE, but they all share the goal of making the development of software programs as efficient and streamlined as possible. Whether you are a software developer, tester, or maintainer, a good PDSE can be your best friend for getting the job done quickly and effectively.