Protopage - The best iGoogle alternative. Chris Pirillo calls Protopage "The best designed".
dashi by Premast - Create dashboards in a snap
Netvibes - First personalized dashboard publishing platform for the Web. Digital life managment, Widget distribution services and brand observation rooms.
Annotate by Convergely - Easily annotate images you get on Slack - just like Skitch
Favepad - An alternative start page with Facebook, Twitter, GMail, and Yahoo! Mail dynamic widgets.
Collaboration from CloudApp - Collaborate with commenting, annotations, and faster sharing