Simple Cms Websites
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Simple CMS for HTML/PHP static websites
If you find WordPress too complex, you should try Sitecake. It's really basic, drag and drop CMS for static websites.
1,213,015 
$ 960.00
WonderCMS - one of the smallest and lightest flat file CMS - Home
One the smallest, lightest flat file CMS for building websites. Open source, secure, light, simple and fast. Runs on 5 files with a JSON database.
682,073 $ 1,920.00