[shameless plug] If you have an Android phone around, you can just run your own gateway from it: http://kalsms.net http://kalsms.net Put an unlimited SMS plan

[shameless plug] If you have an Android phone around, you can just run your own gateway from it: http://kalsms.net http://kalsms.net Put an unlimited SMS plan SIM card in the phone, scan the QR image, configure two settings and you're done, anywhere in the world.