
Description: SEO Tools Centre is a free online suite of SEO and marketing tools to help website owners and marketers analyze and improve their site's search engine visibility. It includes tools for keyword research, backlink analysis, rank tracking, site auditing, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: SERPs.com is a paid alternative to Google that provides access to historical search engine results pages (SERPs). It allows you to see the top 10 organic results for any keyword going back over a decade.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API