As a Java5/JUnit4/Maven2 learning exercise I’ve written a simple little SMS command line utility called Meteor WebSMS. It allows you to bypass Meteor’s website and send the free web SMS messages they offer from your command line (you have to be a Meteor customer of course).
The API is completely separate from the the command line tool so it’s available if you want to use it in your own Java programs. Javadocs are here.
Since this is a learning exercise full source code and Maven pom.xml are included in the distribution. The URL is http://www.17od.com/meteor-websms.