
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Flexcil is a digital notebook and PDF annotation app for Android and iOS. It allows users to take handwritten notes, annotate PDFs, record audio, highlight text, and organize everything into flexible notebooks. Key features include cloud sync, thorough PDF tools, and AI-powered handwriting recognition.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API