No download is required to use GenePattern online.
To install GenePattern on your local machine:
The standard installation procedure uses the InstallAnywhere installer. For some installations, this mechanism is not appropriate (for example, when the platform is not supported or if the desire is to install into an existing web server and not use the Apache Tomcat installation created by the installer). In these situations, an alternative is to install GenePattern from a WAR file (Web ARchive), as described in Installing GenePattern from a WAR File.
Source code for GenePattern and its modules is available under the GenePattern software license. For access to the source code, email the GenePattern team.