
Description: PDF Signet is a free tool for applying digital signatures and timestamping to PDF documents. It allows adding legally-binding signatures to PDFs to verify document integrity and authenticity.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API