LLTK (Little Llama TK, LLama TK, whatever)
TKPL (getting close to TCL/TKL ...)
FlexTK
You should know LTK is the Lisp Toolkit (
http://www.peter-herth.de/ltk/). If you're thinking of PTK that's either the Perl TK (
http://www.lns.cornell.edu/~pvhp/ptk/ptkFAQ.html) or this one:
http://www.phelios.com/ptk/
So this runs in framebuffer mode, right? Or if it runs in X, it also supports framebuffer mode?