Website Speed Test by Pingdom - Pingdom is a website performance monitoring software.
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
HttpWatch - HttpWatch: The ultimate HTTP Sniffer for Chrome, IE and iOS
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
SEO PowerSuite - Get all SEO tools in one pack - download free edition of SEO PowerSuite and get top 10 rankings for your site on Google and other search engines!
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.