Dru 3.1.1 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 software lies within Design & Photo Tools, more precisely Viewers & Editors. The most popular versions among the program users are 1.2 and 1.0. The actual developer of this Mac application is AlecMedia.com. The unique identifier for this application's bundle is com.alecmedia.dru.
From the developer:
Dru's easy-to-use features enable the user to create a document with ease - without the complications associated with other professional, high price programs. It only takes a few simple clicks to create eye-catching presentations such as: brochures, letters, fillable forms, logos, quick HTML prototyping, and other graphical elements.
You may want to check out more Mac applications, such as Smith Chart for Mac or Keynote Action Pack, which might be related to Dru.