
Description: Storyteller is an open-source business requirements and acceptance testing tool. It allows users to write executable specifications in plain language that can automatically test their software.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: A document viewer is software that allows you to open, view, and print documents in various file formats like PDFs, Word docs, Excel sheets, PowerPoint presentations etc. It provides features to navigate through pages, search text, insert comments, fill forms etc.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API