
Description: Plumm is a free, open source project management software. It provides tools for task management, time tracking, resource planning, reporting, and more. Plumm has an intuitive and customizable interface suitable for individuals, teams, and organizations.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Matrix.org is an open source, decentralized communication protocol and network focused on secure and private communications. It allows users to communicate with each other on different platforms via chat, voice, video, etc.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API