Hi, I've been working on rewriting the preferences code of LimeChat and have now extracted it for use in other projects. I thought it might be interesting for HotCocoa as well. See the readme and tests for an idea of the usage: http://github.com/alloy/rubycocoa-prefs/tree/master Currently it's aimed at RubyCocoa, because that's what I still actively use, but I could work on making it fit with MacRuby. Cheers, Eloy