
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: ReLaXed is an open-source PDF reader, annotator, and editor software. It allows users to view, annotate, rearrange, edit, fill forms, and sign PDF documents.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API