
Description: VivPDF Editor is a free PDF editing software that allows users to view, edit, create, convert, annotate, protect, sign, and optimize PDF documents. It has an intuitive interface and various tools for common PDF tasks.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: PDF Studio by Bullzip is a PDF editor and reader that allows you to view, edit, annotate, redact, sign, and convert PDF documents. It has a user-friendly interface with advanced features like OCR text recognition and batch processing.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API