DoubleClick is a provider of digital marketing technology and services. It offers technologies and services that are primarily sold to advertising agencies and mass media companies. These are to be made possible thereby to act more purposefully and switch interactive advertising campaigns. Companies use DoubleClick for ad serving, media, video, search and affiliate marketing purposes.

Open Weather Map API is providing current and historical weather data. Furthermore it includes an up to 16 day weather forecast, map layers, the UV index and air pollution data.