I recommend using
my fork of skylobby which just had its default server list updated:
Spring Official (lobby.springrts.com)
Beyond All Reason (server4.beyondallreason.info)
Metal Factions (mfserver3.metalfactions.pt)
Recoil Official (lobby.recoilengine.org)
Tech Annihilation (lobby.techa-rts.com)
skylobby can stay connected to multiple servers simultaneously.
Maybe one day it'll let users connect to ZK's servers too ;)As far as i know techA's community still plays on the springrts.com server and not on their separate lobby server.
MF also has a fallback battle room on springrts.com but if you're going to play it I recommend joining the populated room on the MF server instead. Also, check the
web site and join the
MF discordHaven't seen XTA, KP or NOTA rooms in a while. There's also S44, SplinterFaction and MechCommander Legacy (MCL)