Update:
Now that was quick. Thanks to Markus Prinz for taking over maintenance!
Original Message
I am the creator of fxri, which is an FXRuby interface to RI, that supports search-on-typing. Fxri is a small little program, that tries to provide the desired information as fast as possible.
I currently do not have time to do any Ruby related work, so I would be very happy if somebody could take over the maintenance of this little tool. I do not expect it to be much work, maybe a little adaption to new releases of FXRuby from time to time, and creating new gems to download.
So, if anyone is interested and has an account on rubyforge.org, please contact me and I will give you administrator access.
And fear not, i think the code is not so bad. At least I have some comments in it 
I like the fxri idea and I have used it in the past. I am sad with the current state of the project.
I am not willing to continue developing it, though. I believe that if you move it to a github repository, it is much more likely that someone will fork it sooner or later.