Over the years I have built and run several websites using a wide range of technologies, ranging from static HTML with custom Perl CGI scripts to more modern CMS systems including Moodle, Drupal and CMS Made Simple.
These are currently on line
Congregation Beth Hillel This is the only surviving CMS Made Simple site. The name says it all. It works, is easy to understand and set up.
Amoodle Moodle is a CMS designed for distance instruction. It's been up for roughly 5 years, and is still being used. Before I retired from teaching, I had all my course materials, grades and all that there.