The page demonstrates our worldwide map service - it is an alternative to Google Maps API - for a fraction of the price. You can use the maps in Leaflet, OpenLayers, in the mobile apps, etc.
It seems not to be 100% clear from the website, but MapTiler is a family of products.
One of them is called MapTiler Cloud [0], which is based on our own open-source project OpenMapTiles and data from OpenStreetMap and offers base maps in vectors and rasters.
Apart from it, there is a MapTiler Desktop [1] (and Engine [2]), which is a desktop software producing raster tiles (the support for vector tiles is work-in-progress).
Scared of the price hike? There is now a bit more time to search for Google Maps alternatives which will not break your budget...
If you have not seen it yet - you can check also our recently launched MapTiler Cloud (https://cloud.maptiler.com/) - which is a very affordable map hosting service from the authors of the popular open-source project OpenMapTiles.