HandUp Campaigns - Assemble your community to donate to those in need
WeShelter - Unlock a donation when you pass a homeless person in NYC
Ecosia - Ecosia is a green search engine that donates at least 80% of its profits from search ad revenue and...
TAP London - Tackling the homeless problem together
Tab for a Cause - Raise money for charity with each new tab you open
Giftcard Zen - Buy a gift card at a discount