Screenshot.
That's
EPIC4 with
Anduril on my Linux box, which I connect to from my Windows box with PuTTY, as you can see there.
I don't really like EPIC4, though -- it's just the least crappy of all the available options to me. What I'd really like is a GUI client with EPIC4's windowing model (where it's possible to have multiple channels per window), and a less crappy scripting language like Perl or Ruby or something. (I've thought of trying to write one myself, but I really don't think I'm skilled enough.)