In brief, the WikiAll add-on lets you search simultaneously on multiple Wikipedia websites. All you have to do is to select the checkboxes that you are interested in from the list displayed in the window that pops-up when you click on the green icon installed in the URL bar.
Here are some key features of "WikiAll":
WikiAll allows you to search simultaneously the same word in one or more of Wikimedia Foundation`s services:
· Wikipedia
· Wiktionary
· Wikibooks
· Wikisource
· Wikiquote
· Wikispecies
· Wikinews
· Wikimedia
· Wikiversity
· Wikitravel
Language available:
· English
· German
· French
· Spanish
· Italian
· Portuguese
· Japanese
· Chinese
· Russian
