If you’ve been looking for a great set of high-res icons for your applications that look great on Mac OS X, Windows, and Linux, then take a gander at the Crystal Icons from Everaldo.com. These icon sets, originally developed for the KDE project, provide just about every type of icon you need. The icons all look great, have full alpha-trasparency, come in PNG format, come in sizes ranging from 16×16 to 128×128, and are available under the LGPL license. With such a nice looking icon set available under the LGPL, it makes you wonder why some Java developers are still using icons from the Java look and feel Graphics Repository or this Icon Collection.