WebSMS

WebSMS is an Android app that sends free and cheap messsages via different web services.

WebSMS application for Android powered phones allows you to send free or cheap SMS messages using various web services, such as GMX, o2, Sipgate, Innosend.de, Cherry-SMS.com, sloono.de, arcor or fishtext. There are many providers supported.
You can download at: http://apk.cuaban.net/detail/7478/ WebSMS .html