I'm working on a single page style search engine that allows you to get a result set all on a single page, (videos, web, news, social, images etc...), It's still early alpha and very buggy. DDG inspired (we don't collect personal search data)
PHP/ MySQL we're using some Python for some backend processes some of the results we're pulling from APIs but we are working on our own crawler that we'll mashup with other data to make better results...