
Description: Abyss Web Server is an open-source, cross-platform web server that is designed to be lightweight, fast, and secure. It supports HTTP/1.1, HTTP/2, and ALPN and can handle thousands of simultaneous connections with low memory usage.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Microsoft IIS (Internet Information Services) is a flexible, secure and manageable web server for hosting websites, applications and services. It runs on Windows servers.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API