
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: Orion Viewer is a free open-source image viewer focused on speed and usability. It's lightweight with support for common raster image formats like JPEG, PNG, BMP, as well as RAW formats. Key features include basic image editing, exif data display, customizable themes, and customizable keyboard shortcuts.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API