
Description: PDFill is a free PDF editing software that allows users to fill out, edit, merge, split, rearrange, encrypt, decrypt, print and save PDF documents. It has basic PDF functionality for free.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: UnityPDF is an open-source PDF viewer and toolkit for manipulating PDF documents. It allows for PDF creation, editing, rendering, and conversion using a plugin-based architecture.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API