There are quite a few projects and resources related to Kooboo CMS. They are however quite spread out over the web and can be tricky to track down. I have added a "Kooboo tips and tricks" article to try and assist others with this process. The following information should be of use to anyone looking to venture down the Kooboo path.
Kooboo is the brand, owned by parent company Yardi Technology.
Details on parent company Yardi Technology. They used to have a website at http://www.chinasoftware.eu/ it seems to have vanished though.
The Kooboo CMS product page. A free, open-source content management system.
The Stack Exchange proposal site for Kooboo. A place to ask your Kooboo technical questions and the best place to find answers to them.
The Kooboo Mail product page. A commercial product for email marketing campaigns.
An ECommerce platform to integrate with the CMS.
Documentation on how to use the CMS.
Discussion forums. Invaluable for exchanging advice and tips with other Kooboo users.
Free themes / skins / layouts / templates to use with Kooboo CMS.
The official download location of Kooboo CMS. Rather confusingly though the source code is not hosted on code plex.
The source code for Kooboo CMS.
A live, online demo of Kooboo CMS. Login with full admin rights and play around to try before you "buy".
The location of some common extensions for Kooboo CMS.
A page listing the location of all the known third party extensions and plugins for Kooboo CMS.
A website where you can build your own themes / skins / layouts / templates. Download them and put them in your CMS instance.
Dutch partners of Yardi Technology.
A third party Kooboo community site supporting Russian users.