SmallScreenX displays resizable borders to simulate different screen resolutions – helpful for Web designers who want to get an idea of how a page will look on different monitors. You can drag a border to resize a page or type in exact dimensions; then you lock it in place. A menu lets you select any open application and automatically resize the application window to the SmallScreenX dimensions. You can save SmallScreenX borders as separate document files. This handy, stable utility is free. If you need more control over screen measurements, try charlieX Screen Rulers (see our review, elsewhere in this article).