Apache is a free and open-source cross-platform web server software.
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.
Sass is an extension of CSS that enables you to use things like variables, nested rules, inline imports and more.
TYPO3 is a free and open-source Web content management system written in PHP.