GluePrint 1.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. GluePrint for Mac belongs to Developer Tools. We recommend checking the downloaded files with any free antivirus. This free Mac app 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.