I know that Google has code search that helps to find something within code.
I wonder if there is any way to get list of sites that uses particular engine?
For example find all sites that use XWiki engine or MediaWiki engine?
I know that sources of this opensource projects here:
And Google Code Search searches within them. But I was looking for a way to list sites that use this engine.
Can anyone advise me? Could it be that there is some other search service that I can use for this purpose?