
Description: A document viewer is software that allows you to open, view, and print documents in various file formats like PDFs, Word docs, Excel sheets, PowerPoint presentations etc. It provides features to navigate through pages, search text, insert comments, fill forms etc.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: PDF Reader Air is a free, lightweight PDF viewer for Windows, Mac and Linux. It allows you to view, print and annotate PDF documents. Key features include tabbed viewing, search, bookmarks, hyperlinks and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API