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).
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.
There is a toggle on the demo page that flips to vector.
I also found that if I hold ctrl I can rotate at random and even go "3d" and see some of the building's heights (in London anyway).
I've got no interest or relation in this (apart from being a OSM contributor years ago), but this is one of the most convincing alternatives to google maps I've seen. The free-rotate on the vector tiles really makes a difference.
Could I asked why you stopped contributing? I kind of feel like the userbase is struggling a bit, and I wonder if it's just Google's (using Android's) influence, or if it is something else.
The base is Openmaptiles (https://openmaptiles.org), to build from osm data you'd need to spin the infrastructure from docker. I posted the link to maptiler because in other threads people were looking for a simpler cloud instance (I'm at the sotm conference and they presented it)
Thanks! Openmaptiles looks like it might be exactly what I'm looking for at work. Enjoy the conference. I didn't know it existed but hopefully I can get my company to send me next year.