Development

😬 TikiWiki has the best end-user and administrator ease-of-use and features of the CMS's I have evaluated. Typo3 being the most extensive, elaborate also the most end-user confusing of them all. Drupal, Joomla and eZ Publish being the other easy or easier ones to use that I also tested. Everyones needs are different you will need to throughly evaluate all your options, visit http://www.cmsmatrix.org/ for comparisons of CMS's. The easiest isn't always the best option to use, you will need to take into account what your doing and what features you need and may need later on.
You will need to have someone help you evaluate your needs and to help compare your choices. I'm sure you'll find that TikiWiki may be your top choice or very close to it when compared to the others, depending on your needs/wants.

In my use (your experience may be different) the simplest to use (interface and WYSIWYG (What You See Is What You Get) content management wise) is mambo but the features are limited (no user wiki, user based features, upload files etc), the menu structure for multiple levels is very confusing and customization is a lot harder if your not html savvy. But this is not a problem as most businesses/institutions, etc, get a web developer to make the template customizations for them, they just need a pretty interface thats easy to use to add the content and make updates, etc.

NOTE: I have had no text formatting problems with TikiWiki unlike mambo and some of the others that are using a WYSIWYG interface. They do the wiki or html style coding for you but the code is all hidden. When you copy and paste text in it can have hidden line breaks and font tags and you cant find then to remove them, that can make you pull your hair out more so then learning the simple wiki code.