
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: PDFSharp is an open-source .NET library that allows developers to create, edit, and process PDF documents in .NET applications. It provides a full PDF document creation API that can generate complex PDF files from scratch.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API