MozBar

MozBar gives you instant metrics while viewing any page or SERP.
-Create custom searches by engine, country, region, or city.
-Quickly assess the Page Authority and Domain Authority of any site or page.
-Access and compare link metrics across pages while viewing any SERP.
-Find and highlight keywords on a page and differentiate links by type: Followed, No-Followed, External, or Internal.
-Expose page elements, general attributes, markup, and HTTP status.
-Export your search engine results page (SERP) analysis details to a CSV file.