Ciao Massimo,
your project looks very nice. I will have a closer look at it some
time. But your app is also governed by the GPL license so there should
not be any problem using Pyxer for it. But if you just want to use
py2js you have to ask the respective author. You find his contact
details in the source code.
Maybe I will change the license to LGPL or an even more liberal
license, but for the moment I'll keep the option to use a commercial
dual licensing model. Until version 1.0 I will find a final solution
for this.
Tanti saluti,
Dirk