1. SERP Trends SEO Extension

This chrome extension provides you with an insight into the ups and downs of your website's SERP ranking on a regular basis.

2. Nightwatch’s SEO Search Simulator

SEO Search Simulator by Nightwatch allows users to see the top-ranking results depending on location.

3. FatRank

Fatrank is an SEO Chrome extension that provides real-time rankings for any website or keyword. This can be quite useful in tracking competition or client site performance.

4. Google SERP Counter

It simply adds numbers to search results, allowing you to determine your website's SERP position.