Qwika is a search engine designed specifically to search wikis. Its aim: to cover all wikis in all sizeable languages, translate them, make them easily findable in the shortest possible time.
Wikiwix is another device that trawls through Wikipedia, Wikisource, Wiktionary, Wikiquote, Wikibooks, Wikispecies, Wikiversity, Wikinews and more. It came up with some intriguing results (“Tim Rylands” came up with “Bald Uakri” as one idea!) but proved interesting when trying other searches.
Category: 2) Useful n Interesting