The 1.2.2 version of WindowClipMBI for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This Mac application was originally developed by By Limit Point Software. The application is included in Productivity Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
WindowClipMBI is a menu-bar application for creating clipboard snapshots of the windows in any application, for any application, and more. Features include: scaling, composite, trimmed composites, filter effects, and timed shots. Using its special features, WindowClipMBI can create screenshots which are not possible (or not as easily) with other methods.
You may want to check out more Mac applications, such as Quokka, KoolClip or Clipster, which might be related to WindowClipMBI.