
Description: Mustache is a logic-less template syntax that works by expanding tags in a template using values provided in a hash or object. It is often used for HTML, config files, source code - anything with logic-less templates.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Underscore.js is a JavaScript library that provides utility functions for common programming tasks like mapping, filtering, and functional programming paradigms. It allows developers to leverage functional techniques which can help manage state and complexity in web applications.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API