The 3.1 version of ShowIEL 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.
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. This free software for Mac OS X was originally produced by Wondertouch, LLC. The application lies within Design & Photo Tools, more precisely General.
From the developer:
ShowIEL is a free utility that allows you to view particleIllusion effects.
You may want to check out more Mac applications, such as particleView, which might be related to ShowIEL.