
Description: Calistry.org is a free online calculator and unit converter tool. It offers hundreds of calculators and unit converters for math, finance, health, science, and more, allowing users to easily convert units and perform calculations.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: ThinkCalculator is an open-source calculator and computation software for Windows. It has advanced math features like trigonometric functions, logarithms, factorials, percentiles and more for engineers, students, programmers and power users.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API