5
You should check Wanikoo work !
I've also convert some themes
to "flying windows" that shows
such interface can be easily done
with Xoops. But take care online!
Till next version, run an intranet
Have Fun
Link of the french project i've used by the past
with Wanikoo work and XOOPS built with ease
http://prototype-window.xilinus.com/
I like people more than machines or money. But that's me!
Lets do something good and great: Lets do open source!