WonderCMS - Lightweight Flat File CMS

Key Features

• WonderCMS is the smallest CMS in the world (flat file).
• Completely free and easy to install by simply unzipping and uploading to your server.Founded in 2008 and open sourced in 2010.Features- very small in size and works with only 5 files- one click update- simple click and edit functionality- no configuration required, unzip and upload- lightweight - runs only on a couple hundred lines of code- simplified code- custom login URL- custom homepage- rebuilt mostly from scratch + MIT license- better password protection- no known vulnerabilities- highlighted current page- mobile responsive, easy to theme, 404 pages, clean URLs- page deleting easier than ever- better SEO support (title, keywords and description for each page)- (optional) functions.php file includes itself when you create it- made with PHP, jQuery, HTML, CSS and a flat JSON database- works on Apache and NGINX- WYSIWYG editor - Trumbowyg available as a standalone plugin- simple file uploader available as a standalone pluginRequirements: PHP 5.5 or above and support for .htaccess.
• For NGINX, editing the server config is necessary.

Technical Specifications

• **Publisher:** Wondercms.com
• **License:** Freeware
• **Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
• **Last Updated:** October 15, 2025
• **Category:** Web Developer / Site Mappers