http://packages.ubuntu.com is an amazing website for finding information about packages. I can see how a given package evolved in each release, can compare differences (from Maverick to Precise, for example), download other releases's versions to study or even backport them, etc. It has links to the Debian equivalent, launchpad, etc. It's an amazing cross-release package control panel. I even added its search to my firefox custom searches.
So, the question is:
Is there any similar website for the partners repository?
... and what about security? And extras?
My google skills may be rusty, but I couldn't find it.