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
Removed debug for Hub
Output a little debug info in LobbyBalancer
Added duplicate check to ServerMonitor
updated Customer SUpport server to have changeable password, added logging of command executors, added lifetime perks for hero/ultra