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.
Bunny Fonts is an open-source, privacy-first web font platform designed to put privacy back into the internet.
OpenResty is a web platform based on nginx which can run Lua scripts using its LuaJIT engine.
Varnish is a reverse caching proxy.