Amazon SMS by KM Peterson
From the description of the April 2013 BBLISA meeting at http://www.standalone-sysadmin.com/bl...
"K M Peterson gave two talks, both about interesting technologies that I wasn't aware of. The first was a result of his search for a provider-agnostic method to send SMS messages that didn't break the bank or involve maintaining an array of modems. He ended up setting up a script to talk to Amazon's SMS service, and provided us example code in his slides."