This web page is all about crowdfunding, which is the practice of funding a project or venture by raising monetary contributions from a large number of people, typically via the internet. (1) Among the goals of this page are to list all major crowdfunding websites that exist.
Wikipedia has created a list of major crowdfunding platforms and compares them by certain factors: http://en.wikipedia.org/wiki/Comparison_of_crowdfunding_services
References and further information:
1. Wikipedia Crowdfunding page: http://en.wikipedia.org/wiki/Crowdfunding