Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.

SimilarWeb - SimilarWeb.com is a website analysis tool that gives you analytics information for any website.

Fancybox - fancyapps.com - Fancy App Store

Website Informer - Website.informer: complete data lookup & free aggregated report on any domain including whois, visitors, IP & DNS details, competitors, owners, etc

jQuery Lightbox - jQuery Lightbox plugins are utilized to showcase images and other web stuff using modal dialogs.

Site Rank Data - View historical rank information of websites via time series charts.