
Description: qpdfview is a tabbed document viewer for PDF and other file formats like PostScript, DejaVu, XPS, DjVu and others. It aims to be lightweight and configurable. Key features include zooming, printing, annotations and searching.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: OpenViewerFX is a free, open-source image viewer, converter and editor for Windows. It supports a wide range of image formats and has basic editing features like cropping, resizing and color adjustments.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API