
Description: FastPreview is a free image and document viewer software for Windows. It allows quick previewing of images, PDFs, Office documents, emails and more without opening them in dedicated apps.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Context Viewer is a cross-platform open source file viewer that supports viewing over 300 file formats. It has a clean and simple interface allowing users to quickly open files without installation.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API