
Description: Open Site Explorer is a free SEO tool by Moz that allows you to research a website's backlink profile and analyze competitors' links. It provides metrics like Domain Authority, Page Authority, and link metrics to assess sites' SEO performance.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Nightwatch is an end-to-end testing framework for web applications and websites, allowing automated testing of frontend user interfaces. It uses Selenium WebDriver APIs internally and provides an easy API to write tests quickly.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API