
Description: IETester is a free utility that allows you to test websites in different versions of Internet Explorer on the same computer. It simulates IE 5.5 to IE 11 without needing multiple virtual machines.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: CrossBrowserTesting is a cloud-based web application testing tool that allows users to test their websites and web apps across various browsers, operating systems and devices. It aims to provide comprehensive cross-browser compatibility testing.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API