This plugin used to add the lightbox (overlay) effect to all images on your WordPress site with Pojo…
Plugin directory
lightbox plugins
WordPress plugins for lightbox. Launch any one in a live sandbox in seconds.
Transform your standard galleries into an immersive full-screen experience without requiring you to connect to WordPress.com
Makes the native WordPress galleries use a lightbox script called ColorBox to display the fullsize images.
Enables fancybox on all image links including BMP, GIF, JPG, JPEG, and PNG links.
Lightbox slider plugin is allow users to view larger versions of images, simple slide shows and Gallery view…
Divi Lightbox for self linked individual images
A WordPress implementation of the Slimbox2 javascript.
PopupAlly allows you to create advanced popup signup forms in under 5 minutes without dealing with messy code.