SimilarWeb - SimilarWeb.com is a website analysis tool that gives you analytics information for any website.
Kevel - Kevel's APIs make it easy for engineers and PMs to quickly launch a fully-customized, white-labeled, server-side ad server.
Site Rank Data - View historical rank information of websites via time series charts.
Epom - An ad serving solution for publishers, advertisers, ad and affiliate networks
Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
Google Ad Manager - Grow revenue wherever your users are with an integrated ad management platform that surfaces insights for smarter business decisions.