POINT - Awesome link sharing/commenting with friends.
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.
microChange - Snapchat-Venmo hybrid for donating.
Google Arts & Culture - Explore collections of art and culture from around the world, both past and present.
The Groundwork - The API for building modern movements
New Tab by Flickr - Get a beautiful photo each time you open a new tab