Search site screenshots

About a month ago I found a good Flex site, it had a lot of source codes and ready-made solutions. Now I can’t find it, I’m sitting on the second day and the result is zero. Accordingly, the idea was born to make a search engine with standard capabilities, but so that a screenshot was shown next to the found site.

If this is already implemented, then I will be very grateful for the link to such a search engine.