MiniEssentials is a utility plugin based on the idea of the Essentials plugin, features from which I borrowed into my plugin.
At first, the plugin was created as a local plugin for personal use, then it grew into a repository on GitHub, and so, I decided to publish the plugin here.
Features:
/speed <1-10> - change speed of walking/flying.
/ping - displays the ping of the player who entered the command.
/gamemode <0/1/2/3> - switches the game mode of the player who entered the command.
/fly - switches the flight mode (if you are standing on the ground, then you turn it on, if you are in flight, then turn it off).
/weather - changes the weather in the player's world.
/time - changes time in the player's world.
Open-Source - plugin code is completely open and stored on GitHub.