mcBalancer

At first you need to add server named "hub" to your BungeeConfig. This server should not be real, so you don't really need to have it running. Just add it with any IP and port combination and make it default so all connected players will go to "hub". Then you need to name all your hub servers with this pattern: "hub<number>". At the start plugin will mark all this servers as hub.

servers:
  hub:
    address: localhost:40000
    restricted: false
    motd: '&4My Little Network'
  hub1:
    address: localhost:25750
    restricted: false
    motd: '&9Hub 1'
  hub2:
    address: localhost:25751
    restricted: false
    motd: '&9Hub 2'
  hub3:
    address: localhost:25752
    restricted: false
    motd: '&9Hub 3'
  hub4:
    address: localhost:25753
    restricted: false
    motd: '&9Hub 4'
  hub5:
    address: localhost:25754
    restricted: false
    motd: '&9Hub 5'

Commands:
- /hub: sends user to hub.

Permissions:
balancer.hub - to use /hub command

Config file description:
pingDelay - interval between group ping in millis. Each server group have it own ping-thread. Default: 5000; You can change it to lower values if you need more precise balancing in multi-bungee environment.

pingTimeout - ping socket timeout in millis. Default: 2000; Change it if you know what you're doing.

entries section. This contain all server groups. All server groups have these 3 parameters:
- mountPoint - this is your virtual server, all connections to this server are balanced to servers matching regexp pattern. createCommand - will plugin auto create command /<mountPoint> with balancer.<mountPoint> permission.

Default hub section:

{
      "mountPoint": "hub",
      "pattern": "(hub)(\\d+)",
      "createCommand": true
    }