Dale Glass is working to TrustNet, an alternative to the SL ratings system. It’s nearly done, and will soon be available. Currently it’s still in testing, but he expects to have it finished in a couple of days. Dale Glass explains that it runs on his server and it’s not going to be open-sourced.
From TrustNet 0.44 Help:
Unlike the SL system, there are no global ratings in TrustNet. Instead, scores are calculated for people based on your ratings, and the ratings of the people you trust. Everybody gets different scores for the same person, and in fact, it’s perfectly possible for two people to have completely different scores for the same person. (…) Your friends’ ratings are worth only 1/10 of your own, and their friends’ ones only 1/100 (…) Ratings add up.