The United Nations Educational Scientific and Cultural Organisation recommends and lists Tikiwiki as a Productivity Web Tool:

Tiki CMS/Groupware (aka TikiWiki) is a powerful open-source Content Management System (CMS) and Groupware that can be used to create all sorts of Web applications, Sites, Portals, Intranets and Extranets. TikiWiki also works great as a Web-based collaboration tool. TikiWiki is a multi-purpose package with a lot of native options and sections that you can enable/disable as you need them.

Interaction: TikiWiki is a content management system for writers. It supports wikiwiki web pages, blogs, CMS news article publishing, discussion forums, a directory of links, a calendar, RSS newsfeeds, user-designed databases for tracking contacts/events, and many other things as lots of people added code to the product over the last year.

Due to a large number of reports of the 1.8.4.zip package being corrupt, tonight it was repackaged and uploaded again to SourceForge. Within the next couple of hours it should have populated around the mirror sites.

If anyone is having trouble with any of the other archives, please comment this article and I'll get them repackaged and sent up to our project page again.

I recently upgraded doc.tikiwiki.org to use TikiWiki 1.9 development code, this will enable us to use the new multilingual features of TikiWiki to collaborate the documentation in different languages from within one site. Please if you can assist with documentation writing or translating, surf over and pick a page to get started.

Our Tiki Map features the community worldmap here on tikiwiki.org semi-dynamically from now on: in a nice zoomable, panable, layered fashion.

If you feel like adding your spot, edit your location in User Preferences.

Thanks to Franck, Spatialguru, Mose, the users and developers of the Mapserver community, and all others who inspired and worked on these features!

TikiWiki 1.8.4 is out! The files can be found at the usual location on Sourceforge. Tiki admins are strongly urged to upgrade to this version due to a vulnerability in versions 1.8 through 1.8.3 that allows individual wiki page permissions to be bypassed. Several path disclosure vulnerabilities have also been removed in the smarty_tiki area. Read on for more information regarding other bugfixes and enhancements, or visit ReleaseProcess184.

A common question has been asked many many times both in the tiki forums and also on our IRC channel. The question is: Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 737280 bytes) in xxxxx or sometimes, I keep getting blank or half drawn pages, whats the problem?
The answer is that PHP is running out of memory! Click read more for some solutions to the problem.

The second release candidate of TikiWiki 1.9 is now out on SourceForge.

Please download and help us to eliminate showstopping bugs and make TikiWiki 1.9 one of the best Tiki's yet.

A Russian localized Tikiwiki community site has been working for some time now on http://tikiwiki.ru/.

TikiWiki 1.7.8 has now been released. 1.7.8 contains the important Wiki page rollback fix that security work in 1.7.7 created.

We also recommend that you try TikiWiki 1.8.3 which will soon replace our stable 1.7.x Tiki family