
Description: HydraPaper is a free open-source PDF reader, annotator, and editor software for Windows. It allows viewing, annotating, and editing PDF documents with basic features like adding text, drawings, signatures, highlighting, and comments.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Video Paper is a video editing software that allows users to easily create whiteboard-style animated videos. It has a simple drag-and-drop interface for adding images, text, shapes, and more to a virtual whiteboard canvas.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API