Härnta.se
YMCAfestival.com
MalvinaKTH.se

www.kfuk-kfum.se
As the webmaster of www.kfuk-kfum.se, and 16 sites belonging to clubs and regions of KFUK-KFUM, I'm very familiar with Joomla, an open source CMS. Joomlamanual 2010