Developers can create custom, reusable, encapsulated HTML tags for the web using Web Components. Components use the Custom Element standard, frequently in combination with the Shadow DOM, HTML Templates, and ES Modules.
FireComponents
An experimental JavaScript UI library
Polymer-based web component for D2L tooltips
Polymer-based web component for D2L text inputs
Polymer and Sass custom styles/mixins for D2L progress element
Javascript framework for adaptive Web Components with GPII support
Web Application Design System using Web Components
Edit properties / attributes of custom element, monitor events.
Primo is an open-source design system
Rapid Build UI · Web Component <rb-alert>
Complementary polyfills for @webcomponents/webcomponentsjs