
Description: Ultra PDF Merger is a lightweight Windows software that allows users to easily merge multiple PDF files into one document. It has a simple drag-and-drop interface and options to rearrange pages before merging.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: jPdf Tweak is an open-source Java application for editing PDF documents. It allows you to merge, split, rearrange, encrypt, decrypt, and add images or text to PDFs easily.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API