Either this is spam, or you're asking (nay, demanding) that ESF be made open source. I'll assume the latter.
The ESF Alpha 2.0 source code was released, you can download it
here (I'm not certain if that's the latest release, harSens'll have to clear that up).
As for the current version, it's completely up to the development team and/or the programmers on the development team. If they want it open source, that's their decision. If they don't, that's their decision too.