
Description: PDF Clown is an open-source Java library for manipulating and enhancing PDF documents. It provides an API for creating, editing, and transforming PDFs programmatically.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: PdfPig is a PDF editor and converter that allows you to easily edit, merge, split, encrypt and convert PDF files. It has an intuitive interface and advanced tools for annotating, redacting and modifying text and images in PDFs.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API