
Description: The Linux kernel is a free and open-source operating system kernel first released in 1991 by Linus Torvalds. It serves as the core of Linux operating systems and is used widely in servers, mainframes, embedded devices, and Android smartphones.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: NeXTSTEP was an advanced, object-oriented operating system developed by NeXT Computer in the late 1980s. It pioneered many innovative features for its time including the Mach kernel, Display PostScript, and a GUI built on top of it.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API