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

Chiss bfaa138526 Merge branch 'master' of ssh://dev.mineplex.com:7999/min/mineplex		2014-03-01 10:35:20 +11:00
Maps	fixed map name	2014-01-22 08:02:58 +11:00
Plugins	Merge branch 'master' of ssh://dev.mineplex.com:7999/min/mineplex	2014-03-01 10:35:20 +11:00
TexturePack	Initial Commit	2013-08-27 08:14:08 -07:00
Webserver/ServerHandler	Initial Commit	2013-08-27 08:14:08 -07:00
Website	Added horse disguise.	2014-02-28 01:18:32 -08:00
.gitignore	Sheep Quest	2014-03-01 10:35:06 +11:00
UNDANGLE THEM BLOBS.bat	Xmas Game	2013-12-21 10:17:22 +11:00
putty.reg	depr deprerer	2013-11-06 01:04:17 -08:00