RealMac has released Button Builder extreme 3.0 for Mac OS X.
Used for creating buttons for Web pages, this version has three roll over effects – normal, over and down.
Button Builder features: more than 100 buttons in ten sizes; Web-page creation; Soft drop shadows; Live updates; and there is "full control" of text, including bevel and shadow effects.
It can export to a number of formats, including JPEG (Joint Photographic Experts Group), PNG (Portable Network Graphics), TIFF (Tagged Image File Format), BMP (Bitmap) and QuickTime.
Button Builder is $20 shareware available for download.