NewPagesUser is a JavaScript application similar to Special:NewPages, except that:
It finds only pages created by a specified user.
It finds all pages created by the specified user, not just the recent ones.
It allows searching more than one namespace, but fewer than all of them, if desired.
Installation
Usage
This application looks for an HTML element (usually a <div>) with the ID js-newpagesuser on the page. If it doesn't find it, it exits. If it finds it, it runs. So, for example, add <divid="js-newpagesuser"></div> to the page where you want it to run. When it runs, it creates a control panel where you specify the user whose pages you want to find and in what namespaces you want to find them.