Two questions about some plugins I need

Hi Guys

I have been searching for some plugins, but can't seem to find anyone that I need. Here is what I am looking for.

A public gallery plugin. Not the default gallery all users have. But a plugin, that can be installed on a page, where everyone can upload pictures and write comments to them. Hope you got some ideas.

I think I one time saw a plugin where you could make deals about driving together. Find a driving buddy. But now I cant remember what it was called. I have search different terms, but cant find it again. Maybe you guys know something.