
Description: Abacus is an ancient calculating tool used for basic arithmetic. It consists of beads or stones that slide on rods or in grooves, allowing quick mental calculation.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Numi is a beautifully designed calculator app for Mac that offers standard, scientific, programmer, and conversion calculator modes. It has a clean interface with large, tactile buttons and support for keyboard shortcuts.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API