Let’s use Apache Tomcat to run UI5 Apps! Tomcat is a very light-weight, but a full blown Java based app and web server. It can be well integrated into Eclipse IDE and therefore a perfect counterpart in development. It is much more light-weight and faster in startup than any SAP Java Server. It also enables you to write server-side components (like servlet’s, JSP’s,…), which then can be consumed by our UI5 App. And like OpenUI5 it is Open Source and free!