Download of iZoom 1.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The application lies within Design & Photo Tools, more precisely Viewers & Editors. This free Mac app is a product of Celestial Teapot Software.
From the developer:
Ditchnet Software today announced the availability of its new photo resizing/cropping tool called iZoom. iZoom is the perfect companion for your iPod photo or photoblog, Drag photos from your file system or directly from iPhoto onto the iZoom canvas and select a cropping region, photo size, and export quality.
You may want to check out more software for Mac, such as 3D Image Commander, UnCoverIt or ImageBuddy, which might be related to iZoom.