Apache is a free and open-source cross-platform web server software.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
SimpleSAMLphp is an open-source PHP authentication application that provides support for SAML 2.0 as a Service Provider (SP) or Identity Provider (IdP).
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.