Free map tools
No sign-up, no key. Each tool shows the API request that does the same thing, so you can move it into your app.
Static map maker
Turn an address or coordinates into a map image and the URL that makes it.
Geocoder: address to latitude and longitude
Look up the coordinates of any address or place.
Reverse geocoder: coordinates to address
Find the address nearest to a latitude and longitude, or to where you are.
Also try the privacy area map on the home page: type an address and get an image that shows the area, not the house.