SearchX for Mac

From Xnation:

SearchX gives you the easiest way to search for whatever you want using almost any search engine in the world in no time. The only thing you'll have to do is to type in one or more keywords, choose where you want to search if it's not already selected and press the enter button. Then SearchX will bring you to the result page for your search in your default web browser. SearchX comes with 28 different search places, including web site search, news search and image search places. An if that's not enough, you can add you own favorite search places yourself. One of the application's extra features is the ability to apply custom skins to change the whole look of the application.

Features:
• Search using any search engine available on the web
• Add new search places
• Change the whole look of the search window using SearchX skins
• Change the transparency of the search window
• Enable and disable the shadow of the search window
• Automaticly run SearchX at login