
Description: Xodo is a free PDF reader and annotator for Windows, Linux, Android, iOS and web browsers. It allows you to view, edit, sign, and collaborate on PDF documents. Xodo is lightweight, fast, and has an intuitive, user-friendly interface.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Librum is an open source ebook manager and reader designed for organizing personal libraries and reading ebooks. It allows users to catalog and organize their ebook collections with support for over 20 metadata fields. Librum also includes an integrated reader with support for popular ebook formats.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API