CrochetCharts 1.2 is free software helping you to create crochet charts of different difficulty. It is a new version of application originally developed by Brian Milco. On the request of the University of Hasselt he agreed to open-sourcing his application. With the support of Prof. Wim Lamotte and the feedback of Annelies and Arno Baes, Olivier de Schaetzen worked on it for a month in order to release a first major update of the software. CrochetCharts is completely free and can be downloaded and used by everyone forever. And its code is now publicly available, so everyone (who is familiar with programming) can improve it, make changes and add new features.
Here is video tutorial link: