I have to mention Geohash because it's easy to spell, licence free, variable precision, what else? Plug: https://demo.mro.name/geohash.cgi https://demo.mro.name

I have to mention Geohash because it's easy to spell, licence free, variable precision, what else? Plug: https://demo.mro.name/geohash.cgi https://demo.mro.name/geohash.cgi That said, having familiar words in your (local?) alphabet is charming. But for public good it HAS to be public domain (the alphabet + algo, not the service, however).