All versions of AutoTide include all 4500 world wide ports in 14 database. Additional user locations for heights and tidal can be entered into AutoTide Gold. The names of the databases have been chosen to correspond to the largest country within the database.
Locations appearing in capitals are UKHO standard ports.
Also, some names are the names of the harbour - not the nearest city. You may need to search around a little for your port, especially in geographically complex areas like SE Asia. Actually, the simplest way to find a port is to download AutoTide and enter the latitude and longitude of the location. AutoTide's built in search mechanism will list the nearest AutoTide locations. It will also list the ports in coastal order or alphabetic order.