From BriTon Leap, Inc.:
The Embrilliance Thumbnailer provides an easy way for you to view machine embroidery and machine quilting designs on your Mac. You see your designs right in the Finder, using all the Views including Icon, List, Column and Cover Flow. This is accomplished using a QuickLook plugin. Embroidery designs are shown in 3D, and can be seen in the Preview too.
Using the Thumbnailer App, you can control the plugin to view only the files you want.
You can view embroidery designs in .ART/.ART42/.ART50/.ART60, .CND, .CSD, .DST, .EMB (most versions through 2011), .EMD, .EXP, .GNC, .HUS, .SHV, .JAN, .JEF/.JEF+, .PCS, .PCM, .PEC, .PES, .PHB/.PHC/.PHD, /SEW, .TAP, .VIP, .VP3, .XXX and machine quilting files .CQP, .IQP, .QLI, .HQF, MQR, .SSD