Modal Survey WordPress Poll, Survey & Quiz Plugin provides the opportunity to hear your visitors’ voice through attention grabbing polls.
Demo: https://codecanyon.net/item/modal-survey-wordpress-poll-survey-quiz-plugin/6533863
Modal popup windows are fancy popups also known as Lightboxes. You can make modals / lightboxes for whatever you want.
Demo: https://regularlabs.com/modals
The module allows to display articles, custom or k2 items on a popup modal. Show full article in popup window and use navigation arrows to go to next article.
Demo: https://www.olwebdesign.com/joomla-extensions/content-modal.html
Designed to ease the process of creating and setting the modal windows on the WordPress site.
Demo: https://wow-estore.com/item/wow-modal-windows-pro/
SIMP Modal Window is feature rich popup plugin for WordPress, you can create unlimited popups with full control over layout, design, display and contents, it’s all up to you where, how, when you want to show a popup to visitors of your website or blog.
Demo: https://codecanyon.net/item/simp-modal-window/4074846