Apache is a free and open-source cross-platform web server software.
Endurance Page Cache adds basic file-based caching to WordPress.
Jetpack is a popular WordPress plugin created by Automattic, the people behind WordPress.com.
Open Graph is a protocol that is used to integrate any web page into the social graph.
PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
ShareThis provides free engagement and growth tools (e.g., share buttons, follow buttons, and reaction buttons) for site owners.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.
Twenty Nineteen is the default WordPress theme for 2019.
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.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.