hello
i have a phone ready to send multiple sms
but is there any application that let me select or add a list of numbers and send sms to them ?
like a sms gateway or server
(i would like it free/opensource)
thank you

You want a text message server? Well, that depends on your phone. If it's an old one, it probably has some sort of PC Suite, and you can use your own app to hook window calls/dialogs and use that to send them.

If it's iOS, then TextPlus. Also any other apps similar to that will do.