Google Arts & Culture - Explore collections of art and culture from around the world, both past and present.
Tab Pics - Beautiful /r/EarthPorn of our planet in every new Chrome tab
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.
New Tab by Flickr - Get a beautiful photo each time you open a new tab
Momentum - Agile goal and performance management
Minimo - An elegant, simplified new tab page