Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
wordpress i-search pro - i-Search Pro changes the way of WordPress Search. It’s full WooCommerce compatible.
ClassicPress - The WordPress fork. No Gutenberg. Great future!
WordPress - WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.
Textpattern - Textpattern is an elegant content management system that is free, open source software.
Manticore search - https://www.