
Description: pxtoem.net is a simple online tool that converts pixel (px) values to em units for use in CSS. It allows web developers to easily convert font-sizes, margins, paddings, etc. from pixels to ems.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Layoutit is a free website builder that allows users to easily create website mockups and prototypes without coding. It has a drag-and-drop interface with various layouts, templates, and design elements to choose from.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API