Add additional search engines to the selection context menuThis extension allows you to define set of search engines that will be available in selection context menu (i.e. select text and then right-click to search for selected text). Chrome by default allows only "Default search engine" to be listed there. You can add as many search engines as you want.
Really simple thing with no permissions needed at all.
Usage:
1) select text you want to search for
2) right-click the text
3) pick search engine to be used for search