WP Modal Popup with Cookie Integration is the smart, responsive, customizable and beautifully coded popup for visitors with cookie integration.

Popup Colorbox is the most spellbinding plugin in WordPress that implement Lightbox-effect look of the images and videos.

Clifton's Lightbox implements a lightbox subscription form overlay. Features a title, list, call-to-action, and image or video.

Display a popup to your WordPress site: age verification popup for adult-content site ★ multilanguage popup with qTransalte-X ★ very easy to use

Easily create a popup for your Wordpress site.

Grow your email list fast & increase profits with JineOptins. Create engaging widgets customized for your visitors and watch your conversions soar.

meBounce encourage your visitors to put their information before leaving your blog and website pages. It helps you grow your email list by converting visitors into subscribers and customers.

Widgetic makes it easy to create beautiful widgets for your WordPress site.

Convert anonymous visitors into subscribers and customers with 40Nuggets' intelligent screen overlays

Clean announcement plugin that reveals a neat popup when users visit your site. You can set who sees the announcement and when to display it.

WP Lightbox 2 is awesome tool for adding responsive lightbox effect for images and also create lightbox for photo album/gallery on your WordPress blog. WordPress Lightbox is one of the most useful plugins for your website.