BracketCloud

BracketCloud makes creating and sharing your tournaments easy. - Feature packed. Create single or double elimination brackets, round robin schedules and ladders. User sign up, analytics, hybrid tournaments and more. - Social tools. Embed and share your tournament. Collaborate between multiple admins and chat with users in real time. - Access anywhere. BracketCloud keeps all of your tournaments in the cloud for seamless access from any computer, phone or tablet.

Screenshots from Chrome Web Store