ACT will run on any machine that has a recent version of Java. This version of ACT requires Java 1.4 at least. Most of the development has been done using JDK v1.5 and some of the more advanced features (SSH) now require 1.5. Please note that the version of Java that comes with Netscape and Internet Explorer is not sufficient to run ACT. See the section called Getting and Installing ACT for details on how to get Java.