You can view the formatted master server list here.
A bolded server means that it is dedicated, orange means passworded and blue means full.

You can click on a server to view extended information on it.

Admin Server Name Players
MaxyWaxy TF2 5/16
BCS Sports 4/30
Disty Monster RPG [v0.85] 3/12
Kyle! Grapple Knife 2/40
TronicGuardian29 server 2/2
Hue ?? 1/20
DAProgs UMX X.1.5 Server 1/26
Nozero Endless Zombies 0/8
The Brighter Dark Randomizer (v4) 0/16
Sauce Kitchen Freebuild 0/6
DAProgs City FreeBuild 0/20
The Brighter Dark Server 0/12
Badspot Badspot's SpeedKart 0/20
Sable WIP 0/45
Gunny The Last Frontier DEV 0/10
Cat123 Unlimited Mining 0/20
Conan Farming 2 0/42
patyos Rising Lava ! 0/20
Jam Jar 2018 #3 0/99
Age of Dungeons Age of Dungeons [US-E] 0/15
Speedkart Club Speedkart Club 0/20
Lake CityRPG Dev 0/36
DAProgs Test Server - reboot al 0/12
Aetherys Bedroom Freebuild 0/20
Doppler Elega Interlude [MERP] 0/25
Jas Limited Mining 0/24

Right now, there are a total of 18 players spread across 26 server(s).