
Description: Specimen is a digital typeface specimen web app that allows designers and developers to easily create, share and showcase typeface specimens. It has a simple drag-and-drop interface to add fonts, customize layouts, and preview specimens across devices.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API