The source code from mineplex 2018 leak with commit history dating back to 2014, it requires a lengthy setup to get functional but is a reasonably easy compile if you know what your doing just have to repatch the spigot

Jonathan Williams 3fb52c5c71 Initial Commit		2013-08-27 08:14:08 -07:00
Maps	Initial Commit	2013-08-27 08:14:08 -07:00
Nautilus.Core.VoteHub	Initial Commit	2013-08-27 08:14:08 -07:00
Plugins	Initial Commit	2013-08-27 08:14:08 -07:00
TestApps/LOCTester	Initial Commit	2013-08-27 08:14:08 -07:00
TexturePack	Initial Commit	2013-08-27 08:14:08 -07:00
Webserver/ServerHandler	Initial Commit	2013-08-27 08:14:08 -07:00
Website	Initial Commit	2013-08-27 08:14:08 -07:00