Chrome //
Extensions 
Chrome
Web store 
Amazon Keyword Ranking & Index Checker
Free 'key'word ranking & index check tool by SellerApp - The most accurate seller tool for all amazon market places.
Google Rank Checker,Keyword SERP Ranking Tool
Google Rank Checker, Keyword SERP Rankings Tool with CSV Export and Copy to Clipboard Functionality.
Website Ranking and SEO Checker by Semalt
Semalt SEO Extension is a free SEO tool to track websites’ Google rankings and spot issues that keep you from attracting traffic.
Show Conference/Journal Ranking
Show conference/journal rankings in search results. Currently supports CCF rankings on Springer, DBLP, IEEExplore and ACM DL.
On-Page SEO Checklist, Ranking Factors & Tips
Step by Step On Page SEO Checklist (Perfect for WordPress SEO)
Codechef Ranking
Let you know your Codechef college rank on contest's page only. From Chrome store. (Thanks to Yash Mehrotra)
