Gratitude Flow - Gratitude Flow is a web extension that allows you to share and receive gratitude on your new tab with real people around the world.
UpEffect - Crowdfunding for social good products
Google Arts & Culture - Explore collections of art and culture from around the world, both past and present.
Creddon - Tweet for a cause and a sponsor will donate $1 to charity
New Tab by Flickr - Get a beautiful photo each time you open a new tab
eSolidar - Charity shops and online auctions to support great causes