'JRebel has changed the way developers code in Java. Never again will you need to redeploy your application to see the impact of code updates. Make changes and JRebel applies them instantly to your running application.'

"free for personal, non-commercial use only. All you need to do is allow sharing your usage statistics on a social network."

Hmm. So "free" as in "we get to post to a social network from your account"?