Topaz Labs has released Fusion Express for Apple Aperture, a free plug-in that lets Aperture users work with its Topaz plug-ins for Photoshop.
Topaz Laps makes plug-ins designed to work with Photoshop and other compatible applications, including Adjust, DeNoise, Simplify, Clean and DeJPEG. Up until now, Aperture users have had to use the External Image Editor command to export images to Photoshop before they could apply Topaz filters. Using this Aperture plug-in, users don't have to leave Aperture in order to apply image changes.
System requirements call for Mac OS X 10.4 or later, 1GB RAM and Aperture 2.x.