PASS (PSRE) develops the Piping and Equipment Analysis & Sizing Suite, a family of engineering software for piping stress analysis, piping hydraulic and thermal analysis, pressure vessel and equipment strength analysis, and finite element analysis of nozzle-to-shell junctions. The suite also includes CAD integration tools, industry-specific bundles for process plants, piping systems and district heating, and an academic edition. The company also offers engineering consulting and online training courses, and its software is used by thousands of engineers worldwide.