Im sure everyone here is familiar with crowdfunding and the associated services that provide this platform and the widget you get for your site. I am looking to crowdfund a little project and would like to avoid the crowdfunding services [and their commission].

I can replicate the crownfunding page with ease, ie the layout and rewards, etc etc, but not sure where to begin with the actual "pledge" part, ie days to go, total monies etc etc,. done it recently by crowdfunding their project, anyone aware of an opensource option ? any help would be appreciated.