KDE 4 is moving forward, but if KDE 3 is your favorite Linux desktop, Trinity KDE 3 is your solution. Maybe.
Trinity, a computer desktop environment for Unix-like operating systems with a primary goal of retaining the overall KDE 3.5 computing style, is now at version Trinity Desktop Environment 22.214.171.124.
Trinity Desktop Environment 126.96.36.199 brings a lot of updates and new features and it even includes a Trinity rebranding.
With the exception of some minor tweakable changes, Trinity desktop is closer to KDE 3.5 than MATE is to Gnome 2.32.