WatermarQue 1.0 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. We recommend checking the downloaded files with any free antivirus. The most popular version of the software is 1.0. The program lies within Design & Photo Tools, more precisely Viewers & Editors. This free software for Mac OS X is a product of Tomoyuki Okawa.
From the developer:
WatermarQue is a simple application that allows users to lay a watermark on multiple graphic files quick and easy. Simply, drag and drop a group of up to 10 files to the listbox of the application window. If you like, also, drop a sample graphic file onto the drop box to design a watermark. And then give a go. It's just that simple.
WatermarQue accepts various graphic formats for inputs such as BMP, GIF, JPEG, PDF, PNG, PSD (Photoshop) and TIFF.
You may want to check out more Mac applications, such as WatermarQue Plus Trial, which might be similar to WatermarQue.