
Description: PDF Rider is a PDF viewing, editing, and annotation software for Windows. It allows users to view, create, edit, sign, and annotate PDF documents. Some key features include tabbed PDF browsing, commenting tools, form filling, digital signatures, and optical character recognition.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: PDF24 Tools is a free PDF software suite for Windows that includes functionalities like PDF creation, merging, splitting, encryption, conversion, and more. It's easy to use with an intuitive interface.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API