
Description: JSignPdf is an open source Java library that allows developers to digitally sign PDF documents programmatically. It supports features like visible and invisible signatures, time stamping, multiple signatures, and more.
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