[ecyrb]

Kibana / ElasticSearch? It's limited, but pretty and interactive, and gets you a bunch with very limited up-front work. I'm sure you can find some better demos, but here's one: http://parlement.letemps.ch/

HUE is a similar but different alternative. The "search" tab has some great demos, but appears to be down atm: http://demo.gethue.com/