Ubuntu and window controls

Ubuntu-tweak is a separate, and much more ambitious, project to gtweakui (which, AFAICT, is abandoned -- hasn't been updated since 2004. And for what it's worth, some parts of it actually do seem to have been incorporated into Gnome proper at some point -- e.g. the "Interface" tab in Gnome's Appearance tab certainly seems to be straight out of gtweakui-menus).

Ubuntu-Tweak isn't in the repositories; their ppa is ppa:tualatrix/ppa .

(I am slightly dubious about some parts of it -- e.g. it has its own application centre, which has echos of Automatix etc. in that it tries its hardest to hide the distinction between programs in and not in the Ubuntu repositories from the user. Given its target market -- tweakers, so power users of a sort -- I'm not sure why they think this is necessary, or desirable. (This is also the part which makes it Ubuntu specific -- it apparently works perfectly well on e.g. Fedora, as long as you stick to the parts which *are* just a front-end to gconf and avoid the package management bits).)