
Description: GraphSketcher is a free, open-source software for drawing different types of graphs and diagrams. It allows users to easily create flow charts, UML diagrams, ER diagrams, network diagrams, mockups, floor plans, and more. Key features include a simple and intuitive interface, auto layout and formatting tools, export to various file types such as PNG, SVG, PDF, etc.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: GeoGebra is a free open-source dynamic mathematics software for all levels of education. It combines geometry, algebra, tables, graphing, statistics and calculus in one easy-to-use package. It can be used for graphing equations and functions, exploring geometry, providing dynamic representations of mathematical concepts, developing student worksheets, and assessments.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API