Tabliss - A beautiful new tab page with many customisable backgrounds and widgets.
start.me - A Modern-day bookmark manager. A place for your favorites. A news feed (RSS) reader. A browser startpage. A portal for your team.
Awesome New Tab Page - Enhance your Google Chrome New Tab Page with ultimate customizability and power. Awesome, like you.
Protopage - The best iGoogle alternative. Chris Pirillo calls Protopage "The best designed".
Humble New Tab Page - Redesigned new tab page featuring your bookmarks, apps, most visited, recently closed, and weather...
Netvibes - First personalized dashboard publishing platform for the Web. Digital life managment, Widget distribution services and brand observation rooms.