
Description: PDF4Free is a free, open-source PDF editor that allows users to view, create, edit, convert, encrypt, sign and print PDF documents. It offers basic PDF editing features like adding text, images, shapes, whiteout, highlights, annotations and digital signatures.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Adobe Acrobat DC is a comprehensive family of software and services for creating, editing, signing, and sharing PDF (Portable Document Format) files. It offers a range of tools for document management, collaboration, and secure digital workflows.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API