AxSumo

Features:

• 4 Databases supported: H2, SQLite, MySQL, PostgreSQL

• Customizable: There are many options, more info on the wiki

• Ingame Editor

• Easy to setup: It only takes 6 commands to create a functional sumo arena

• Builtin scoreboard system (optional)

• Sumo match ups are randomly selected

• Crash handling: Inventories, experience and past location is saved in the database, items are kept even after a restart

• Give items to players (like knockback sticks) at the start of the round

• Spectator mode: if you lose, you can still spectate the tournament

• Add unlimited schedulers, using the builtin scheduler system, using the Cron format

• Simultaneous sumo events: It's possible to run as many sumo events at once as you would like

• Item and command rewards

• Placeholder system: use dozens of placeholders in almost any text or externally with PlaceholderAPI

• Very easily usable leaderboards, just use a placeholder with a time and it will automatically keep it up to date

• Make hourly, daily, weekly, and any kind of Leaderboards, even possible to use something random like a 10-minute board

• Start sumo events with activator items