MapTiler is a maps API service from Switzerland. It provides map tiles for your own applications and includes a designer tool, so you can adjust colours, labels and layers until the map matches the rest of your product instead of using a default style.
Integration is straightforward: there are SDKs for many platforms, and simple websites can embed a map through an iframe. As a Swiss European alternative to the American map platforms, MapTiler is a sensible pick for developers and agencies that want a styled map without depending on a US provider.