I wanted to learn Go programming language so I decided to write somme tropo programs for it.
First type make ; ./sendsms
This should start a go web server locally.
In your web browser, goto: http://localhost:8080/edit/whatever.
You should see a page with phone number and message. Fill in the information, then click send.
Also you will need to create a Tropo scripting app and make sure you have messaging token assigned (and replace it in new.go). Your Tropo script needs 1 line really: message $msg, { :to => 'tel:+' + $to, :network => 'SMS'}