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.
cdnjs is a free distributed JS library delivery service.
Google Maps is a web mapping service. It offers satellite imagery, aerial photography, street maps, 360° interactive panoramic views of streets, real-time traffic conditions, and route planning for traveling by foot, car, bicycle and air, or public transportation.
Ionicons is an open-source icon set crafted for web, iOS, Android, and desktop apps.
Lightbox is small javascript library used to overlay images on top of the current page.
Tiny Slider is a vanilla javascript slider for all purposes.