
Description: Secure PDF Viewer is a free program that allows you to view PDF files safely. It opens PDF files in a sandboxed environment to prevent potentially malicious code in PDFs from infecting your device.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Lumin PDF is a PDF editor that allows you to view, annotate, organize, edit, sign, and collaborate on PDF documents. It has an intuitive interface and advanced features like OCR to convert scans to selectable text.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API