MUME

Note that the question asks which clients you actively use, as opposed to which clients you've used in the past.
You can pick up to three options, since some people have different setups for hanging out, PKing, and playing immortal.

Sorry in advance for the three "other" options.

Oldschool JMC, namely 2.6 version.
Sometimes tintin++ v1.86

Best by far!

JMC is def. more newbie friendly, it's at least easier to make highlights, subs, aliases etc. with it

(I used Powtty before it)

I hit the MUDJC button under play.....not sure where I sit? anyone help