The top image is from xkcd. It was cropped, the luminosity has been highened and some cropped text was removed. Unlike the rest of CoDACom, this image is under Creative commons Attribution-NonCommercial 2.5, therefore you may not use it for commercial purposes.
The rest of the software is under the CeCILL-B licence, a french equivalent to the BSD. It means that you are allowed to copy and modify the code without any restriction, and that you may share the (possibily modified) source code if you specify the original source.
Please note that the software will download code under different licence if the related script is run. As for now, it downloads three methods :