
Description: eXPert PDF Reader is a free PDF viewer and editor for Windows. It allows you to view, annotate, and edit PDF documents. Some key features include tabbed browsing, annotation tools, form filling, digital signatures, and more.
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