You can create tournaments for multipurpose uses.
For example, chess, football and games.
Only you need select which player win. So everyone can use this.

Round-robin tournament

• Each teams play a game with every other teams once or more than twice.
• Max 25 teams
• Max 5 repeats
• Share game table, rank by twitter, email...etc

Bracket tournament

• Knockout tournament. 
• Select shuffle teams or don't do it.
• Max 20 teams
• Share draw by twitter, email...etc

Rating tournament

• Order by rate
• If you won, rate will rise. If you lost, rate will drop.
• Unlimited teams
• Share standings by twitter, email...etc

Other features

• Make Web pages of tournaments.
• Backup and restore data.
• Rankings