The goal of the award winning apertus° project is to create free and open technology for todays professional cinema and film production landscape and make all the generated knowledge freely available.
And we love their philosophy:
WHY OPEN SOURCE?
The apertus° project is based on software free to be used for any purpose, free to be studied, examined, modified and redistributed – which includes distributing your modified versions. Hence, products and services developed by apertus° are almost exclusively released under GNU General Public License V3 . * Documentation provided is licensed under the Creative Commons License and the hardware under the Cern Open Hardware License .