Creddon - Tweet for a cause and a sponsor will donate $1 to charity
Crypto Reef - Donate Crypto, build a virtual reef, support real reefs. 🐠
Wheelys Dreams - Crowdfunding for making dreams become real
Brightest - Spend your time better, help out anywhere, change the world
eSolidar - Charity shops and online auctions to support great causes
Charity Navigator - Charity assessment application.