Bukkit

allows you to see commands being used by other users.

PreciousStones

/register, /login

Lucky Block Plugin

Allows players to have nicknames.

UralClans2

Making reporting players simpler!

Adds 50+ new enchantments to the game as well as elemental arrows

EasyRanks: A simple Admin-Tool for coloured Tablist and Chat! Take a look at it!

Ping

Sort chests and inventories clicking with your mouse, 1.13+ compatible

Manage flying and related commands on a per world basis!

Operate LuckPerms with GroupManager Commands

A plugin that keeps multiple worlds in either day or night!

Speed up Leaf Decay

Scavenger

Fly on survival Easily with a command!

ArchonCrates, the most popular crates plugin.

A party plugin for your server bukkit or spigot.

Hub - Plugin