
Description: Design Calculator is a free online tool to help designers, architects, and engineers quickly calculate dimensions, scale drawings, and estimate material costs for projects. It includes features like unit conversion, calculating room and furniture dimensions, stair design, and estimating material quantities.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: A rule of 3 calculator is a simple tool used to solve proportional math problems. It allows you to enter 3 numeric values and calculates the 4th value based on the proportional relationship.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API