Language Switcher for Google™ allows to switch between Google Results sets according to your language of choice
A simple addon which adds to Google result pages the possibility to ask the same query to other language localized versions of Google and Wikipedia in one click.
USAGE: just use Google, additional language selection tools will be available on the right.
Currently supporting: English-US (queries on google.com), English UK (queries on google.co.uk), Italian, French, German, Spanish, Japanese, Chinese (redirects on google.com.hk), Russian, Dutch.
For adding your favourite language, just drop me an e-mail.
Version 1.1.2, Dec. 2015: Fixed addon failing to appear in some languages.
Version 1.1.1: Added dutch, fixed line wrapping.