In my district we're looking for recommendations for wiki software. We've used hosted solutions such as WikiSpaces, PBWiki, WetPaint, etc. We're looking for something that we will host with some of the same features such as these ease of use, attractive interface, education-friendly, etc. Free or for purchase.
Requirements:
1. Install and run on our server in district
2. WYSIWYG editing
3. Page history
4. Ties to LDAP or ActiveDirectory for single sign-on
On the same theme is Weebly for Education. I believe there is less restrictions with Weebly than there are with Wix in terms of pages and storage space, but I could be wrong. You may also like the article I wrote on Creating Free Classroom Websites with Weebly.