Gumroad is a self-publishing digital marketplace platform to sell digital services such as books, memberships, courses and other digital services.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
LiteSpeed Cache is an all-in-one site acceleration plugin for WordPress.
LiteSpeed is a high-scalability web server.
PHP is a general-purpose scripting language used for web development.