Lets you try out screensaver plugins w/o installing them.
SaverPreview lets you try out screensaver plugins without actually having to copy them to the normal directories. In addition it's improved over the System Preferences preview by showing a larger dispaly and letting you view multiple savers side-by-side. Also potentially handy for screen saver authors.
What's new in SaverPreview
Open dialog now allows selection of multiple items.
Some extra sanity checking to properly handle things that look like screen savers but aren't.