Dear friends of JSXGraph, this is the official announcement of the 4. International JSXGraph conference. Date: 10.-12. October 2023 Conference homepage: https://jsxgraph.org/conf2023/ The conference will bring together developers and teachers, instructors and designers who are interested or already experienced in using JSXGraph to enhance digital learning of STEM topics. As the years before, the conference will be an entirely online conference. All participants are required to register, registration is free.