Get Meta - An API for getting meta information from a web page
Fancybox - fancyapps.com - Fancy App Store
Portia - An open-source visual scraping tool that lets you scrape the web without coding, built by Scrapy...
PhotoSwipe - JavaScript gallery, no dependencies.
Fragment - A powerful image viewing suite with advanced metadata info
Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.