This is an Open Source software (GPL v.3), written in Python, for visualising and manipulating G-code: http://scorchworks.com/Gcoderipper/gcoderipper.html. We have used it to produce this image from the output of Cura (Which is also Open Source, if anyone feels like checking the code), consisting on visualising the tool paths for fuse-deposition 3d printing of a run of Game of Life:
![paths [Converted]03.png](/wp-content/uploads/sites/49/2018/04/paths-converted03.png)