Instant Update is free Open Source PHP/MySQL Content Management System (CMS).
The Difference from others
Instant Update is based on NO template structure. Your HTML is your template.
As HTML elements may have unique ID attribute set, our choice was to use HTML IDs to mark editable regions. This is all done on the fly. That means that Instant Update recognizes all IDs automatically.
...or download from Github and follow these very detailed directions to install:
What we can see in future:
Repeatable content - Repeat any div - one after the other. Good for news, blog, shopping items, statistical data and more.
Gallery that works with any HTML and image size setup.
Plugin system that makes sense.