Header Footer Code Manager by Draftpress is a easy interface to add snippets to the header or footer or above or below the content of your page.
Kadence WP Kadence is a multipurpose WordPress theme that is available for free download and also offers a pro version.
LiteSpeed is a high-scalability web server.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Perfmatters is a performance optimisation plugin for WordPress websites.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
RankMath SEO is a search engine optimisation plugin for WordPress.
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture and a template system.
WP Rocket is a caching and performance optimisation plugin to improve the loading speed of WordPress websites.