A simple Perl wrapper around the Google Maps API. It allows you to easily create maps with markers, polylines and information windows. You can now look up locations around the world without having to install a local database.
Swellcast combines all weather data needed to forecast surf conditions for surfers around Australia, and consolidates the data into a user friendly interface that takes the complexity out of understanding when and where the next big wave will appear. Swellcast also offers the forecast data and surf conditions through the Swellcast API.
The maps mashup landscape changed forever yesterday with Google's announcement of My Maps, a new service which allows non-programmers to easily create maps mashups. With tens of thousands of maps mashups out there already this of course quickly lead to a tremendous increase.