I recently learned of this freeware by JI0VWL from a posting by DJ1YFK. It provides call sign copying practice and competition similar to RufzXP. I see that there are very few participants from North America, so I thought a review might be of interest. See: http://www.eham.net/reviews/detail/11320
I have no connection with JI0VWL other than enjoying the software he so generously provides us. It is by no means a replacement for Rufz; rather it is a valuable supplement.