Untabbed is a Google based search engine that helps you to open the search result on same webpage without open new tab or page. No sign up is required for using it.
To start your search simply type your searches in untabbed website, the result will appear soon simple click on result a tab will open in same webpage. You can drag the tab any where in the webpage. You can also minimize and maximize the tab. If you want separate tab of the result you can see arrow mark on the result click on that the new tab will open.