A software development infrastructure can enable user developers to select remote hardware devices at a remote datacenter to develop and test software programs, such as web or mobile applications. The developer can remotely install an application on a selected remote device and observe a mirrored display of the remote device on a browser local to the developer. The software development infrastructure can enable the developer to test offline mode workflows of the application by blocking network traffic to and from the application but allowing network transmission to and from a streaming application installed on the remote device.