
Description: Zathura is a lightweight, customizable document viewer. It provides a minimalistic and space-saving interface as well as an easy usage that mainly focuses on keyboard interaction. Zathura is highly customizable and serves as a base for an own integrated and functional document viewer.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Firefox PDF Viewer (PDF.js) is an open source PDF viewer that is built into Firefox. It allows you to view PDFs directly in the browser without needing an external plugin.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API