The Lotus Chart is now licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.
The public repository is live on GitHub. What this means is that you are free to download the code and/or adapt it for non-commercial and educational purposes. This new license does permit commit commercial uses of the source code… with permission. We welcome contributors and collaborators. If you would like to use the source code for a for-profit project, please contact us to discuss terms and pricing.
Further background available from Creative Commons here.