New Page Link plugin converts all your external or internal links in the body to always open in a new tab. Also you can add rel="nofollow" to selective links by typing their class names on options page. Class name will always end with a semicolon ';' more you can see yourself from the options page.
Stop any fake data sending visitors away - By default, Open WordPress Comment Links in New Tab/Window (add target=”_blank”) tab or window with: New Tab Redirect Plus.
This plugin Makes Visit Site Link in your admin screen open in new tab. When activated you will get Visit Site Link in the upper right of your admin screen on every page.