(Advanced google search, "IDE" in c.l.ruby)

http://groups-beta.google.com/groups?as_q=&num=10&scoring=r&hl=en&as_epq=IDE&as_oq=&as_eq=&as_ugroup=comp.lang.ruby&as_usubject=&as_uauthors=&lr=&as_qdr=&as_drrb=b&as_mind=1&as_minm=1&as_miny=2005&as_maxd=18&as_maxm=7&as_maxy=2005&safe=off

lots of info in these threads, Like i said somewhere in there,

 Most of discussion is about jedit, eclipse/RDT, freeRIDE, ArachnoRuby,
scite, vim and emacs w/etags, and irb with completion...