EDD Crowdfunding turns Easy Digital Downloads into a crowdfunding platform.
With Easy Digital Downloads and EDD Crowdfunding installed, you will be able to create your own crowdfunding campaigns and take pledges or donations from your website visitors.
EDD Crowdfunding is based on Crowdfunding by Astoundify (http://astoundify.com/). That plugin was removed from the WordPress.org plugin repository in August 2014.
You can find a fork of Crowdfunding by Astoundify at https://github.com/Studio164a/appthemer-crowdfunding/