
Description: Google PDF Viewer is a free web-based PDF viewer that allows users to view PDF files directly in their web browser. It is powered by Google's advanced document rendering technology and works on all major browsers without needing any plug-ins or add-ons.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Adobe Acrobat Reader is a free software application for viewing, printing, signing, and annotating PDF documents. It is the standard PDF viewer and one of the most popular free software downloads with over 2 billion installations.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API