Modal popup windows are fancy popups also known as Lightboxes. You can make modals / lightboxes for whatever you want.

Modal Survey WordPress Poll, Survey & Quiz Plugin provides the opportunity to hear your visitors’ voice through attention grabbing polls.

Designed to ease the process of creating and setting the modal windows on the WordPress site.

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