Lightbox is the perfect tool for viewing photos.
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
Plugmatter Optin Feature Box is the Only List Building Plugin that Allows You to Create High Converting Optin Feature Boxes for Your WordPress Site.
Lightbox Slider plugin is allow you to add unlimited images to gallery with lightbox window.
Easily turn users into cash using Popup Maker - the most versatile & expansive popup plugin for WordPress!
Uji Popup - Create your custom popup.
PopupAlly allows you to create advanced popup signup forms in under 5 minutes without the need to deal with messy code.
Easily create a popup for your WordPress site.
Huge-It Popup Colorbox is the most spellbinding plugin in WordPress that implement Lightbox-effect look of the images and videos
Simple, elegant and responsive modal pop-up box which appears when a visitor enters your site. Cookies support for apper-just-once function.
The #1 WordPress Popup Plugin! Make glorious & powerful popups and market your content like never before - all in minutes!
Supercharged WordPress Popup Plugin. Best way in the world for you to create unique unblockable WordPress popups to grow your list of subscribers!
Create a simple, non-annoying lightbox popup in your blog.
ITRO Popup display a popup to your WP site: ★ Age validation for adult-content site ★ Fully customizable with WP Post Editor ★ Very easy to use
Splash scree box for fisrt time visit or new visitors
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.