Fullscreen Popup Layer with JavaScript and CSS3 – popup_view
popup_view is a pure JavaScript library for creating a fullscreen popup layer that uses CSS3 transitions and transforms for subtle open / close animations.
Modal & Popup
Minimal SEO-friendly Image Lightbox In Vanilla JavaScript
A minimal image lightbox JavaScript library that uses semantic figure and figcaption tags for better SEO & accessibility.
Easy & Robust Modal JavaScript Library – EinsModal
An easy yet robust and customizable modal window library built with vanilla JavaScript library.
Minimal Alert Popup JavaScript Library – Ago-Popup.js
A minimal clean alert popup library for vanilla JavaScript.
Accessible Mobile-friendly Image Lightbox Library – Parvus.js
An accessible, touch-enabled, user-friendly image lightbox component written in plain JavaScript.
Responsive Lightbox Gallery With Pure JavaScript And CSS3 – lightGallery
lightGallery.js is a JavaScript lightbox gallery library which enables you to present various types of medias in a fullscreen, CSS3 animated gallery popup.
No Script Modal Window
A JavaScript-free modal window built using CSS and HTML detail element.
Beautiful Dialog Box Library Inspired By Material Design – SoloAlert
A JavaScript library for creating responsive, beautiful popup boxes (like alert, confirm, and prompt dialog boxes) as seen on Google Android (Material Design).
Video/Iframe/Gallery/Inline Content Lightbox Library – Tobii
Tobii is a feature-rich, responsive, accessible, mobile-friendly lightbox library that makes it possible to display any content type in a modal popup.
Modern Material Design Dialog Generator In Pure JavaScript – duDialog
duDialog is a pure JavaScript plugin for creating Material Design inspired alert, confirmation, selection dialog popups without any dependencies.