Plugin Development Tooling · Developer Tool · by PaperMC
The Gradle build system plugin for Paper and Paper forks, including userdev for building against server internals.
Paper
Developer Tool
A mocking framework for Bukkit and Paper that makes unit testing plugins easy.
MockBukkit is a Minecraft plugin development tool for Paper and Bukkit, listed under Plugin Development Tooling. It is free.
From the source listing
MockBukkit provides a simulated server so a plugin's logic can be tested with ordinary unit tests, without starting Minecraft. It is published under the MIT licence with documentation at mockbukkit.org.
From the source listing
Same category
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Plugin Development Tooling · Developer Tool · by PaperMC
The Gradle build system plugin for Paper and Paper forks, including userdev for building against server internals.
Paper
Plugin Libraries & APIs · Developer Tool · by KyoriPowered
A user-interface library for Minecraft Java Edition: text components, colours, sounds, titles and boss bars.
Paper
Open source
Plugin Libraries & APIs · Developer Tool · by dmulloy2
Read and write access to the Minecraft protocol for Bukkit-family plugins.
Paper · Spigot · Bukkit
Open source