This version will likely disappear with Oracle's looming requirement that all applications be signed with an expensive certificate. Use one of the other installs if possible. A platform-neutral install will be available soon.
PhotoGrok categorizes photos and other files by metadata. It's powered by Phil Harvey's excellent ExifTool. Java 6 or higher is required. PhotoGrok now includes ExifTool for Windows, Mac and Linux users. Please read the FAQ.