There are some places in Maximo using java applets, such as workflow designer, Ci Topology, Workplan Map, Scheduler, etc.
There are too many issues related to applets, because it depends on JRE installed on the user workstation. I usually remove the applets components from app xmls to avoid issues. Also, because of the security issues this tecnology has, many clients are disabling it on the user browsers.
We know that many other applications are migrating from java applet to HTML 5 or something else. Do you have any information about Tivoli's plans ?