Hotjar is a suite of analytic tools to assist in the gathering of qualitative data, providing feedback through tools such as heatmaps, session recordings, and surveys.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
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.
