VCore is a platform-independent Minecraft server plug-in library that was primarily designed for real-time synchronization in multiproxy networks via a global Redis cache. In addition to this framework, it offers platform-dependent library code that can relieve some of the work for e.g. Spigot plugins.
Kaizo Minecraft is a Spigot plugin that makes the overall gameplay of Minecraft more difficult. It's intended for experienced players who're up for a new challenge that still holds many of Minecraf't's vanilla features.
An open source Bukkit and Bungee util for easy creating your own color translators and using them in your projects. This tool is based on inferfaces so it is very simple and convenient for developers.
Scans the player location by X radius every Y ticks (all configurable), if it detects an illegal material, it would notify users that have "chunkreader.detected" node (configurable too). It does also prevent players from interacting & placing illegal materials.