GroupGnosis is a prediction market platform that will power a collection of different front ends, oracle solutions, market maker contracts and various types of prediction market logic and algorithms. Some users of the GroupGnosis platform will use its components to build prediction markets for specific topics. Others can fill an available role on the platform, such as trader, proposition writer, market maker, data feed provider, oracle, proposition decider, insurer, arbitrator, investor, etc. The goal is for everything to become trustless, or at least fully transparent, but we are not there yet.
The site is already live and trading has begun. We started with two markets: one the Augur crowd sale and the second one on the ethereum difficulty. We will add more soon and are open for suggestions.