LOADING APPLICATIONS IN NON-DESIGNATED ENVIRONMENTS

This specification describes technologies relating to execution of applications and the management of an application's access to other applications. In general, a method can include loading a first application, designated to a first isolation environment, including first instructions using the first isolation environment provided by an application execution environment. A second application including second instructions is loaded using the first isolation environment despite the second application being designated to a second isolation environment provided by the application execution environment. The first application is prevented from modifying the second instructions of the second application. Data is processed using the first instructions of the first application and the second instructions of the second application, where the first instructions reference the second instructions. Information based on results of the processing is outputted.