
Description: Hydrogen is an open-source text editor geared towards data science and machine learning. It allows users to write and run code in Python, R, and other languages interactively via kernels. Key features include integration with Jupyter notebooks, support for launching local computing sessions, a flexible interface with themes, and built-in data visualization.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Qtractor is an open-source digital audio workstation application designed for audio recording, editing and managing MIDI and audio Sequencer. It features unlimited audio and MIDI tracks, supporting a variety of plugins and effects, as well as LASH session sharing.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API