This SMS gateway is the webservice part of a SMS gateway based on gammu. It provides an API which enables authenticated users sending SMS via executing one URL.
There are several documentation in the 'doc' folder. Documentation is not finished yet but I'm on a good way.
I'd highly appreciate any contributions. If you want to take part in developing just drop an email to smsgateway@bs101.de.
You may also check my blog over at http://www.bs101.de for anything related to this project. Don't wonder about the blog being in german - everthing related to this project will be written in english.