Cavaj Java Decompiler
Full user review
"Adequate, it does the job"
It does the job of converting .class to code.
It would be nice if it would unzip the .jar first so you wouldn't have to run an unzipper first.
For free, it's great. If I had to pay, I would expect more.
Also my Zone Alarm scanner didn't find any spyware on this, so I don't know what those other reviewers were talking about. Plus download.com (CNET) is supposed to be pretty reputable. Maybe they are just scammers/vandals