The 2.8 version of QuickLens for Mac was provided as a free download on our website. The application lies within Developer Tools, more precisely Webmaster Tools. The actual developer of this Mac application is PIXELINGENE LLC.
From the developer:
As a UI Designer/Developer, you are always trying to create the best possible interfaces. With QuickLens, you can ensure that your implementation matches the design.
QuickLens allows you to: Zoom in to pixels Measure dimensions Sample colors Inspect alignments
...all through a suite of tools: Lens Ruler Frame Guide Tape Monocle Crosshair
You may want to check out more Mac applications, such as RAGE Domainer, konqueror or Abyss Web Server, which might be related to QuickLens.