Systems, methods, and software can be used to launch an application. In some aspects, a plurality of process classes is configured. Each of the plurality of process classes includes one or more applications. Each of the process classes is configured to be associated with a template process. Each template process is associated with a different randomized memory layout. A launch request for an application is received. A process class that is associated with the application is determined in response to the launching request. The application is launched using the template process associated with the determined process class.