Protopage - The best iGoogle alternative. Chris Pirillo calls Protopage "The best designed".
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.
Netvibes - First personalized dashboard publishing platform for the Web. Digital life managment, Widget distribution services and brand observation rooms.
Google Arts & Culture - Explore collections of art and culture from around the world, both past and present.
Domostra.com - Place your favorite link, RSS, weather, notes and a lot of other widgets on your homepage.
New Tab by Flickr - Get a beautiful photo each time you open a new tab