Bukkit

a powerful performance optimization plugin designed to manage and reduce your Minecraft server's RAM

a core plugin/library for bc-Plugins

PHPsend

A simple, easy to use developer platform for creating Minecraft gamemodes

AnhyLibAPI is a library designed for integration into Minecraft plugins, developed to enhance their capabilities on servers running on Spigot, Paper, Purpur, and other Spigot forks

PluginReloader allows you to load, reload, and unload plugins straight from Minecraft or your console.

A fun plugin that adds a hand full of new weapons to Minecraft. No spout needed!

Yamler enables the power of Java Objects in your Config

SinkPlugins is a plugin pack which contains diffrent useful plugins

Minecraft Scripting in TCL!

Easily add a few extra events to your plugins!

RealStats

teleport on saved locations

A lightweight, easy-to-use Menu/GUI API for plugins.

A JSON API for your Minecraft server

Inventory Backup Plugin for Spigot / Paper / Purpur - 1.8 - 1.21.11 - Backup, Restore, Rollback Inventories!

Spigot/Bukkit/Paper 1.15.1

A developer's library to create your own minigames

An API for writing plugins in Scala.

Actor allows you to create NPC actors which playback pre-recorded actions in world.