1Gallery 1.2 for Mac was available to download from 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 created by Deep IT Pro. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. 1Gallery for Mac is included in Design & Photo Tools.
From the developer:
1Gallery is an application that helps you create a web image gallery on your Mac. First, you need to select your images and drag them to 1Gallery's image browser area or to the Dock icon. Optionally, you can reorder the gallery's content as you want. The tool lets you insert more images to desired points, remove something unneeded, and give comments to specific photos. At the end, you simply choose the destination folder for your gallery
You may want to check out more software for Mac, such as Vectorworks 2010 Viewer, TurboCAD Mac Designer or RealCADD, which might be similar to 1Gallery.