Kehalim automates monetization of affiliate programs based on contextual & semantic technology. It is a good alternative to other monetization tools since it is both contextual AND based of affiliates. It is also completely flexible in the size of real-estate you need to devote and the way ads appear and open up.
There is no need to register with the affiliate networks or negotiate with advertisers and your revenues are optimized based on real-time analysis. Pretty cool overall.