
Description: KaiOS is a mobile operating system based on Linux that is designed for feature phones and low-end smartphones. It enables some smartphone-like capabilities on affordable devices, including apps, 4G LTE, GPS, and Wi-Fi support.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Symbian is a discontinued mobile operating system that was used in Nokia smartphones in the early 2000s. It was one of the early operating systems for smartphones but eventually lost market share to iOS and Android.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API