Momentum - Agile goal and performance management
New Tab by Flickr - Get a beautiful photo each time you open a new tab
Sloth Worth - See the cost of your mindless browsing
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.
The Ultimate Productivity Stack - Curated directory of tools to supercharge your productivity
Less Boring New Tab - Your browser deserves a better new tab page