Vue.js - Reactive Components for Modern Web Interfaces
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Webix UI - An enterprise JavaScript Library for cross-platform app development with HTML5 JavaScript widgets and easy integration with most popular JavaScript Frameworks.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Polymer - Polymer is a library that uses the latest web technologies to let you create custom HTML elements.
LightShot - The fastest way to take a customizable screenshot.