PocketMine is a server software written in PHP for Minecraft: PE, also developed into other derivatives (known as spoons). Use this tag for any questions related to plugin development for PocketMine or any of its spoons. If your question may be affected by the spoon you are using, remember to specify it; otherwise PMMP is assumed. This tag can also be used by questions for tools related to PocketMine.
PocketMine is a server software for Minecraft: PE and Minecraft: Windows 10 Edition, written in PHP, originally for documentation purpose. It has a versioned plugin API that allows changing of PocketMine's behaviour.
Target API
This tag is mainly used by questions that involve developing plugins with the PocketMine plugin API, which may refer to many versions. Before 2014, an older API (example) was used, but it is obsolete now and is not covered by this tag.
Since late 2015, after inactivity from the main developer, a large number of PocketMine derivatives/variants (a.k.a. spoons) emerged, which caused a great variant in API. PMMP was semi-officially recognized as the official derivative, so if not specified, it is assumed that a question tagged with pocketmine
is about the PMMP plugin API. Usage of spoons should be clarified, because they have slightly different API.
As StackOverflow aims to let questions be meaningful for future readers, the API should be specified too.
Other than plugins
There might also be other things associated with PocketMine that suit themselves on StackOverflow. These include PocketMine GUI wrappers, installers, etc. They are also included in this tag, but are restricted to programming-related. For installation of PocketMine, etc., use other sites such as SuperUser instead.
Questions can also refer to Poggit, the CI for PocketMine plugins and plugin release platforms, but must conform to be programming-related.