
Description: Klex is an open-source alternative to Microsoft Excel that provides similar spreadsheet functionality. It allows users to create and edit spreadsheets, build formulas and charts, analyze data, and more. As an open-source software, Klex is free to download, use, and share.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Polotno Studio is a free and open-source graphic design and photo editing software. It provides professional-level tools for image editing, vector graphics, web design, UX design, print projects and more. It has features similar to Photoshop and Illustrator.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API