Fraud.net Guardian

Hands down, they have the best analytics for fraud (and broader risk management) in the market.

I thought the implementation was pretty easy. It took about 6 hours of one developer's time and was spread out over a day or two. Then it requires a day of training to get the most out of the incredibly deep data mining capabilities. Although it is a bit of a commitment, it will make you a rock star in your department.

Really positive experience so far. It is the only toolset that we use that can uncover the complex, most difficult fraud scenarios. Has Dave us over a million so far.