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

Features

• Works directly with Safari, no extra software required.
• Search any site directly from the URL field, for example type amazon headphones on the URL to search Amazon directly for headphones.
• Replace Safari’s default search providers with custom ones; DuckDuckGo is a great alternative for example.
• Bundled with common search sites: Amazon, Wikipedia, Youtube, Twitter and more.
• Add any site from the Extension popup on the toolbar.
• Force regular searches by prepending ! to the search query.