The first technology I am going to demonstrate on this site, is the application this site is built on: Dokuwiki.
According to the Dokuwiki website: “DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.”
The video below is very short demonstration of the Dokuwiki LMS (Lesson Management System) plugin.
To try the feature, on this site, you must be an authenticated user.