Handy Modal Window Library – Modal.js
A pretty simple, and developer-friendly modal window written in pure JavaScript and CSS/CSS3.
Modal & Popup
Basic Inline Content Modal In Vanilla JavaScript – Nicedialog
Nicedialog is a minimal static modal JavaScript library to display any inline element in a popup window with zoom in/out animations.
Multipurpose Modal & Popup Window – Msg
Msg is a JavaScript library to create and manage highly customizable modal windows and popup boxes on the webpage.
Animated Accessible Modal In Pure JavaScript – microModal
microModal is a lightweight JavaScript library for inserting animated, accessible modal windows into your document.
Display Grouped Images In A Lightbox – ImageBox
ImageBox is a lightweight, vanilla JavaScript plugin to display a single image or grouped images in a responsive lightbox.
Elegant Any Content Gallery Lightbox In Pure JavaScript – GLightbox
GLightbox is a simple yet powerful, mobile-friendly gallery lightbox plugin written in pure JavaScript and CSS/CSS3.
Accessible Modal Dialog Component In Vanilla JavaScript – a11y-dialog
a11y-dialog is a Vanilla JavaScript (es6) component lets you create elegant, accessible modal windows & dialog boxes using WAI-ARIA.
20 Modal Dialog Appearance Effects – xdialog
xdialog is a JavaScript library to create modern alert/confirm modal popups with 20 cool appearance effects using CSS3 transitions and transforms.
Minimal Accessible Modal JavaScript Plugin – Pure-modal
Pure-modal is a minimal, clean, accessible, animated modal component for modern web design.
Elegant Flexible Image Lightbox Gallery Library – Lightbox V
Lightbox V is a zero-dependency JavaScript image gallery & lightbox plugin that works with single and grouped images.