Our website provided a free download of GluePrint 1.1 for Mac. The application is categorized as Developer Tools. This free software for Mac OS X is a product of GluePrint.
From the developer:
GluePrint is a free application that turns any mockup into a floating guide, and visually align pixels. You can manage all your sites. Also the app allows you to compare your mockups. This application has an user friendly interface and is easy to use.
You may want to check out more Mac applications, such as Url Extractor X, Boks or Navicat for Oracle, which might be similar to GluePrint.