Plugins
Recommended by Sridhar Katakam
http://www.designsandcode.com/wordpress-plugins/search-filter-pro/
http://www.smashingapps.com/2014/04/17/collection-of-jquery-plugins-for-filtering-and-sorting-items.html
-- http://www.smashingapps.com/2014/04/17/collection-of-jquery-plugins-for-filtering-and-sorting-items.html
-- http://codecanyon.net/item/tonic-gallery-jquery-xml-portfolio-gallery/120710?ref=matchthemes
-- http://codecanyon.net/item/cube-portfolio-responsive-jquery-grid-plugin/full_screen_preview/6372959 (also has a WP version)
-- http://codecanyon.net/item/jquery-responsive-portfolio-gallery/full_screen_preview/5678252 (their website uses Bootstrap)