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 e63b4b8d66 Merge branch 'master' of ssh://dev1.mineplex.com:7999/min/master		2013-09-03 17:30:25 -07:00
Maps	Bob wants to play!	2013-08-29 15:55:49 +10:00
Plugins	Merge branch 'master' of ssh://dev1.mineplex.com:7999/min/master	2013-09-03 17:30:25 -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	Cleaned warning.	2013-09-03 14:10:14 -07:00