
Description: CalcNote is a free, open-source spreadsheet software for Windows. It has basic spreadsheet functionality for managing tables, formulas, charts and more. Good for simple personal or student use.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Scalar Scientific Calculator is a free and open-source calculus software designed for studying and teaching higher level mathematics. It features a clean interface and has advanced matrix and plotting capabilities, as well as support for symbolic math.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API