
Description: Optimal Layout is a web design tool that allows users to easily create responsive website layouts. It features a drag-and-drop interface to arrange content blocks and adjust their appearance with premade styles.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Yabai is an open-source tiling window manager for macOS that provides advanced window management, customizations and optimizations for power users. It aims to bring the speed and workflow improvements from tiling window managers on Linux to macOS.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API