Crowdrise Website (12/19/16) "...we give you donors the option to cover the fees on their donation - which they do 95% of the time." (https://www.crowdrise.com/chaos/charity/lowest-fundraising-rates)

Generosity Website (12/19/16) "Many of our users choose to donate directly to our platform to help cover Generosity's operating costs.." (https://www.generosity.com/learn/pricing-fees)