
Description: MarginNote is a PDF and EPUB reader designed for students, teachers, and academics to facilitate active reading, note-taking, highlighting, and annotation. It helps organize ideas, study content deeply, and gain insights.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Zhizhi Reader is a free and open source document reader and annotation tool. It supports PDF, EPUB, MOBI, AZW, and other common file formats, allowing users to view, annotate, highlight, and manage documents and ebooks.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API