Is there an extension to give Safari the same multiple search engine functionality as Chrome?

Solution 1:

Try SafariKeywordSearch. It allows you to set up custom searches triggered by keywords preceding searches. For example, I have it set so that goto Ask Different uses Google's "I'm Feeling Lucky" to send me to the first Google result for "Ask Different".

There's a good set of built-in defaults, and it's pretty easy to add almost any site-specific search out there, by making a small edit to the URL. There are instructions on the site.

Solution 2:

There is also Safari Omnikey, which has a dedicated toolbar button and which I found easier to use:

Safari Omnikey

Chrome-like keyword search for Safari browser. Search Amazon, Wikipedia or any other site directly from your URL bar.

Solution 3:

Also, pull down the Safari menu, after "About Safari" is a direct link to Apple's extensions page. There are several that allow for different or multiple search engines. If nothing there you like, Google is, in this case, your friend.