
Description: Nitro PDF Reader is a free PDF viewer and editor that allows you to view, create, convert, edit, and sign PDF files. It has basic editing features like adding or removing pages, merging PDFs, adding text, comments or stamps, as well as more advanced features like OCR and batch conversion.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Qoppa PDF Studio is a PDF editing and creation software for Windows. It allows editing PDFs, converting documents to PDF, creating PDF forms, adding security features, merging documents, and creating PDF/A compliant files. The basic version is free while the Pro version has more features.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API