Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.