I am big booster of open-source software ie. Linux. The Paizo Pathfinder project is open-source gaming and a fascinating experiment. For the uninitiated, Paizo is creating a game system based on the 3.5 SRD, but “modified” by the fans. They plan on publishing a hardback book next summer, but are releasing revisions as free PDF downloads now. This allows the fan base to have input and make suggestions.
I just received an email from Paizo indicating the Alpha 2 release of the Pathfinder system is available. You can check out the entire project on the Paizo site.
I hope that projects such as this become a model for future game development. I am very tired of games with poor rules, game balance or endless post-publishing errata documents. Hopefully, the internet gamer base make for a better game.