It seems to me that there is no understanding as to what it takes to develop these plugins especially one this complicated. If anyone deplores the lack of such a plugin I would suggest sending the developer enough cash so he can drop his other work and just work on this. Other than that, you’ll have to wait like the rest of us who have actually contributed to his development costs. On the other hand, there is no reason why there should be a WordPress plugin for this since it will run on your website without WordPress. Keep your shirt on and have a little patience and understanding for the developer.