Argonne researchers have several technical demonstrations scheduled in the DOE exhibit booth. One presentation will introduce the Partnering for Scientific Software Ecosystem Stewardship Opportunities (PESO) project, which supports software-ecosystem stewardship and advancement. The SciStream demo enables data streaming between science instruments and HPC nodes. Simulator of QUantum Network Communication (SeQUeNCe) is a customizable, discrete-event quantum network simulator that models quantum hardware and network protocols. And a team will showcase the Extreme-scale Scientific Software Stack (E4S).