This plugin is designed to give you just the bare essentials of commands for your server so you use less RAM than essentials.
At the current moment the plugin is a work in progress, but right now here are some commands.
/Ping - Sends the message "Pong!", great for testing response time
/Gamemode (/gm) - Will toggle your gamemode
/Item (/i) - Will allow you to spawn items.
/ClearInventory (/ci) - Allows you to clear your inventory