
Description: Chart.js is an open-source JavaScript library that allows developers to easily create responsive, interactive data visualizations and charts using HTML5 Canvas. It supports 8 chart types including line, bar, radar, polar, pie, doughnut, scatter, and bubble charts.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Vis.js is a dynamic, browser based visualization library. It offers utilities for data visualizations like timelines, networks and graphs out of the box. It's easy to get started with and integrates well with web applications.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API