Google Modules.com

Google's Personalized Homepage (and its API) allows you to add all kinds of modules from weather maps to a Yahoo search box to anything really. There was one problem though: there was no place to easily find or submit modules. Google has a directory of their own, but it doesn't update with new submissions often and it only shows few modules. That's why we hacked up Google Modules for you.

http://www.googlemodules.com