XServer XSDL is a free and open source app that can be used to create and run your own X Window servers on your Android devices. This is done by using a custom user interface that allows you to configure the server and its options and then launch it.

Once the server is up and running, you can start using it to stream or display content from your desktop or laptop. This is done by configuring the server and adding a connection to it. You can also use it to display content from another application or device that is connected to your Android device.

If you want to stream content from your Android device, you will need to install the XServer XSDL app and the PulseAudio server. The server will be installed in the Android device and the XServer will be installed in the PC or laptop that is used to stream the content.