Available for both Mac and Windows systems, Topaz ReMask 2 features a redesigned user interface, improved memory management, better hair masking algorithms, undo / redo functionality, and keyboard shortcuts. Masks are created by defining areas to keep, cut, or process automatically using a combination of brush, flood fill, reset and refine tools. The result can either be saved to a layer mask in Photoshop, or the image can simply be cut out of its background.
Topaz ReMask 2 is a free upgrade for users of the original Topaz ReMask. A 30-day free trial is available if an email address is provided, and the full version can be purchased for around $70.
More details on the Topaz Labs website.