Clean Alert/Confirm Dialog In JavaScript – Modal.js
Modal.js is a configurable JavaScript popup box library for creating customizable, modal-style alert and confirmation dialog boxes on the webpage.
JavaScript & CSS dialog
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.
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.
Custom Alert/Confirm/Prompt Popup Box JavaScript Library – attention.js
attention.js is a vanilla JavaScript plugin used for creating custom alert, confirm or prompt dialog boxes on the page.
Resizable & Draggable Dialog In Pure JavaScript
A vanilla JavaScript library to create a draggable & resizable dialog popup without any frameworks or libraries (e.g. jQuery UI).
Highly Customizable Dialog Component – dmuka.Popup
dmuka.Popup is a lightweight JavaScript dialog component for displaying themeable, customizable modal-like dialog popups on the webpage.
Promise Confirmation Dialog In Pure JavaScript – ExConfirmBox
ExConfirmBox is a lightweight, zero-dependency JavaScript plugin to create custom promise confirmation dialogs on the webpage.
Pretty Non-blocking Dialog Popup JavaScript Plugin – Prompt-Boxes
The Prompt-Boxes JavaScript plugin used to create nice, clean alert/confirm/prompt dialog boxes and toast-like notification popups on your web app.
HTML5 Dialog Element Polyfill
A JavaScript polyfill for the HTML5 dialog element to create interactive dialog UI components on all major browsers.
Multi Purpose Dialog Library In JavaScript (ES 6) – Dialog.js
Dialog.js is a pure JavaScript plugin for creating modern, easy-to-style dialog boxes using HTML dialog element.