What's The Coolest Java Based Application Out There?

After reading a recent DZone article that discussed how to create a version of Shazam in Java, it got me thinking about what are the best Java based applications that are out there right now? If you were to showcase what Java can do, where would you point someone?

Perhaps it's a JavaME or Android app, a web based application, or something written with JavaFX. There are bound to be lots of great applications based on Java that most people are unaware of.  We had a similar rundown of Ten Amazing Java Applications about two years ago, but it's time for an update?

Please share any of your favorite Java applications here. We all love Java here so let's get a really good list of applications together, showing what Java can do.