Stitch ‘n’ Glitch
Open source software to turn images into glitches, to then form a printable template for embroidery - created with Processing by Andrew Whealy :
Stitch’n’Glitch explores the aesthetic possibilities of combining the random “glitch” technique with the laborious practice of cross stitch embroidery.
Available as an executable file for Windows, Linux and Mac, you can find out more about the project here
Also, Andrew has a Tumblr blog here