GemVt is the GNU Emulator of a Virtual Terminal for the X Window System written on top of the Gtk+ toolkit (much like rxvt).
old, out of date, no scrollbar?
Doesn't compile against gtk1.2 without serious source and Makefile modifications, I got it to compile after about 30 minutes of fiddling and and switching a few api calls, but it's gives you an "execute" box to type commands in, this um... isn't really a hot idea, and isn't even implemented well at that.
It makes me want to take the rxvt source and port it to gtk myself, doing it the "right" way.
11 Jan 1998 23:22
Software to build and execute shell command lines from standard input in parallel.
Full-featured sound library