Shiny Frog (http://www.shinyfrog.net) says the Pixa public beta is now available. Pixa is an app for organizing images on your images on a Mac.
It’s targeted to designers, icon makers, web developers and others who need to to collect icons, inspirations, illustrations, stock photos or any kind of images. It supports such formats as psd, ai, jpg, png, tiff, pdf, bmp, gif, ico, icns, eps.
Pixa will auto-tag information like colors and size; web address, extensions and metadata are also saved for the imported images. It provides tools for creating screenshots and analyzing images.
Pixa requires Mac OS X 10.7.3 or later. The public beta can be downloaded for free from the Pixa website (http://www.pixa-app.com/). Just remember: beta software is unfinished software, so use with care.