You could have downloaded Gertrudis for Dogwaffle 2.1 from our software library for free. This free tool was originally created by Enrique Nieloud. The most popular version among the program users is 2.1. The software relates to Photo & Graphics Tools.
From the developer:
This product is a plug-in version of “Gertrudis” to the painting system called “PD Pro” or formerly called “Dogwaffle”.
While the Gertrudis purpose is to transform a picture in a handmade drawing, the mission of Dogwaffle is to make drawings and animations from scratch.
You may want to check out more software, such as Gertrudis Pro, project dogwaffle or Project Dogwaffle Howler, which might be related to Gertrudis for Dogwaffle.