Have you ever stumbled across a website where you said to yourself, “Wow, I wonder how he did that?” Like the theme was pretty killer or there was a plugin that did something you hadn't seen before, but you know you just need it, as in right now?
If you want to find out what's installed on a WordPress website, click the Twitter button below (it's content unlockable by simply tweeting).
[wpsharely id=”17669″]http://www.wpthemedetector.com/[/wpsharely]
Now, truth be told, it doesn't capture every single plugin a site may be using. I think that's because not all “footprints” of a plugin are used on every page load. But I'm not a developer, so don't take my word for it.