Hello!
I am looking to start a crowdfunding sort of site similar to Kiva.org or Kickstarter.com and was wondering if anyone knew the best way to go about this?

I have been looking into Drupal but I haven't been able to find any modules that allow users to setup a goal, donate to one another, and show a progress meter.

There are a good number of these sites on the internet and I am wondering just how they do it.

Thank you so much for your help!