
Description: Stirling PDF is a PDF editing and conversion software that allows users to easily manipulate PDF files. It has tools to split, merge, compress, convert, encrypt/decrypt, edit text and images, add/remove pages, insert headers/footers, redact content, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Sejda is an open source PDF desktop software for Windows, Mac and Linux that allows users to manipulate PDF files. It offers features like merging PDFs, splitting PDFs, compressing PDFs, adding headers/footers, reordering pages, encrypting/decrypting files, adding watermarks and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API