Paper Minecraft Server
What is Paper?
Paper is a high performance fork of the Spigot Minecraft Server that aims to fix gameplay and mechanics inconsistencies and improve performance.
Paper contains numerous unique features and changes, including many performance improvements not found in Spigot.
Almost everything in Paper is configurable.
Current Version
Paper actively targets the latest version of Minecraft and those versions can be downloaded here.
Other ways to get Paper are described here
Developers
Interested in helping the Paper project? Join us on IRC!
Plugin and implementation developers may be interested to see our code and API.
Support
You can get support for Paper at #paper on SpigotIRC
Please file bug reports on GitHub
Please be prepared to provide errors, stacktraces, and config files
Donating
If you wish to donate, please visit the Aquifer Website and donate there.
Special Thanks To:

YourKit, makers of the outstanding java profiler, support open source projects of all kinds with their full featured Java and .NET application profilers. We thank them for granting PaperSpigot an OSS license so that we can make our software the best it can be.