[rlpb]

It seemed to take too many clicks and concentration to do the common things. I'd like to be able to browse through source without the navigator getting in the way, and it felt like I was fighting the UI all the time. The use of a strange GUI toolkit (Tk?) didn't help. I don't mind learning a few keystrokes if it means that I can do the basic things like navigating the call graph without taking my eyes off the code.

[vineet]

Yeah, developers on Open Source projects often don't spend as much time on Design or UI Polish.