We are a on-demand VPS and Managed Hosting Services provider and Dokuwiki is powering our public facing documentation for our on-demand VPS service.
After deploying a number of Wiki systems during our search for a new documentation platform we found Dokuwiki and haven't looked back since. Were a group of sysadmins & developers so the flat file approach to content management that Dokuwiki offers really appealed to us and we found it quite easy to build a custom theme to match the look and feel of the other areas of our site.