WebPagetest - Run a free website speed test from multiple locations around the globe using real browsers...
Page Optimizer Pro - Page Optimizer Pro is an on-page SEO tool, allows marketers to produce flawlessly optimized pages for Google with ease.
Website Speed Test by Pingdom - Pingdom is a website performance monitoring software.
Schema App - Schema App empowers the Digital Marketer to own their schema markup strategy through to implementation without ever writing code.
GTmetrix - GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
BacklinkSEO - BacklinkSEO is an SEO tool, which is designed to build and monitor backlinks with ease.