This is a really neat program which I have been playing with for most of yesterday evening. It lets you create your own crease patterns to puzzle other origamists with and will even test fold your model if it lays flat.
I have made three CP's so far. The button star was the most fun even if it won't test fold due to it's 3D nature.
These are the result of a brainstorming afternoon a week or so ago to come up with Christmas origami I could teach to a table of under ten year olds.
Quick and with a minimum of steps as well as the ability to be glued to the Christmas card they will be making.
I will eventually be making a video of how to make them, but my next three weeks will be kind of tight time wise so no promises on when.
This is the CP for the leaf pattern.
This is the CP for the button star the symbol next to it is the one you get when something is preventing the program from completing a test fold. It will also highlight the problem point. As you can see there is no problem point it's just that it is not flat.
The third one is not quite right. I haven't yet learnt how to mark the paper in thirds, so it's not a true representation, but you get to see the test fold.
Similar but not exactly like the unit to make a sliding ninja star
So many fun things.
If you would like to make your own CP's or just play around with the maths I highly recommend Oripa which is available for Android in Google Play.