
Description: PDF-XChange Editor is a PDF editor and viewer software for Windows. It allows users to view, edit, annotate, OCR and sign PDF documents. Key features include editing text and images, adding comments, signing documents electronically, and converting PDFs to other formats.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: PDF Nomad is a free, open source PDF editor for Windows and macOS that allows you to edit text and graphics within PDF files. It provides basic editing capabilities like inserting, deleting, rotating pages and adding images, shapes and sticky notes.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API