Searching for a plugin I've seen before...

Searching for a plugin I've seen before...

A year or two ago I came across a plugin that I cannot for the life of me track-down online no matter how I try to search for it.  It was a plugin that allows you can use to (for example) show a client different versions of areas on a page.  It is, essentially, a fancy show/hide type of plugin, but had a nice unobtrusive menu that would allow you to check off what you wanted to have appear on the page.  It was, I believe, specifically intended for developers and designers to be able to show clients multiple versions of parts of pages easily.

It was a really well-done plugin and would make my life easier if I could track it down.  I could write one like it, but that seems crazy since it would never be as nice as the one I've seen.

Thanks!