Abstract: This disclosure describes, in part, techniques for modifying network applications. For instance, remote system(s) may store an application on a first virtual storage device and store a modification for the application on a second virtual storage device. The remote system(s) may then install the application on a virtual server using the first virtual storage device. Additionally, the remote system(s) may receive a request to access the application along with an indication to enable the modification for the application. Based on the request, the remote system(s) may modify the application on the virtual server using the second virtual storage device. The remote system(s) may then launch the application, as modified, on the virtual server. Once the application is launched, the system(s) may provide the application to a user device using the virtual server.